Unexpected guitar practice

So i went over to Scott's house after school, his Dad was at work, and his brother Nick, 13,  was home. Scott, 16, said he'd teach me some new songs on guitar. We went up to his room and started playing guitar, then he said he had some porn mags under his bed he stole from his Dad's room ... "Ohh", i said. Scott asked if i wanted to look at them, and i said, " yeah sure:.  We started to look at the porn mags, and Scott started feeling his dick through his jeans like he was getting a boner. "Do you like them"?, he said. Honestly, i could tell Scott was getting a boner, but i was nervous and said, "yeah they're ok". Noticing i wasn't getting turned on, Scott said his Dad has some porn videos downstairs and asked if i wanted to watch something instead. Now that got my attention, so i said, "OK :P ". Nick, Scott's little brother, was in his room this whole time, i never met him. So we went downstairs and Scott prepared the video in the living room and said this was a good selection and sat on the couch next to me .... Instantly, i felt a nervous vibe shooting through me, like this is wrong, but exiting .. and then i thought, wait.. why would thier DAD leave porn videos in the living room for everyone to see ?!?!?!!! I guess that's what happens when there's a divorce and the Dad gets stuck with the 2 boys?  We started watching the porn vid, and Scott went back to rubbing his boner through his jeans and i could tell he was watching me too .. I was doing the same thing and starting to watch him as we were watching the porn video .... THEN his little brother Nick comes walking in the room like everything is normal LOL ...  Nick walks up to the TV and says, "Ohh yeah this one" and laughs .... Then Nick looks at me and sits down on the couch next to me. Scott immediately says, Nick, this is my friend, act cool ok, behave!" .. So all three of us started to watch the porn, i am in the middle of the two brothers .. We're all feeling our boners through our jeans, except Nick has gym shorts on and i could see his little boner as he rubbed.  Nick took out his dick and started jacking off right infront of us! Then he looked up at my surprised face and said, "What do you think?" .. Scott, was embarrassed and said, "Sorry, yeah he does that sometimes, if you're uncomfertable i can make him go upstairs". I said, "No it's cool". Then i said to Nick, "Nice one dude". Nick says, "Let's see yours". I laughed and said, "Nah dude i'm good thanks hahaha". So Scott and i turned up the rubbing on our boners through our jeans and started looking at each other more as we watched the video. Meanwhile little Nick was out and proud with his boner, all 5" rock hard and jacking next to me.. Then Nick took off his gym shorts and started walking toward the TV naked! Fuck, that kid had a nice ass tho .. Scott said, "damnit Nick sit down or go upstairs!" Nick came back to sit on the couch and asked me again to take out my dick. Scott said, "go ahead, i was thinking i would take it out too". I said, " Ok, you go first". Scott unbuttoned and unzipped his jeans and took them down to this knees leaving his underwear. But you could definately make out his dick. I did the same to my underwear. By this time, i had full electricity shooting through me like my whole mid-section was numb. We were both rubbing our cocks inside our underwear so you could definately start to see our dicks as we rubbed and jacked off.  Nick was really turned on, he said "Hey what do you want me to do?" "OMG WHAT", i said. Nick said agian, "What do you want me to do for you, i'll do anything". Scott said, "He must really like you, he's usually not this way when i have friends over". Across from the couch there was a recliner chair with an ottoman next to it. So i said to Nick, "Hey go bend over that ottoman like you're fucking it, like they do in the porn". Scott laughed and i was joking around, half-joking.... Nick immediately went over to the ottoman, naked still, and bent over it and started to hump the shit out of that thing. Nick's ass was white, tight, and firm from playing soccer. He humped that thing good then raised a leg and really got into it .... Scott was speachless, and i couldn't touch myself without cumming loads ..  Scott was embarassed and said, "Enough of this, let's go back upstairs!" He and i zipped back up and went back up to his room to leave his little bro to his pervy ways haha .. Scott and i got to his room and sat on his bed, he got out the porn mags again and said, "Hey sorry about that, my brother is wierd and gets carried away sometimes". I said, "Dude no worries he's cool and it was funny .. and kinda hot". Scott said "Yeah, i was so horny and hard from the video man, still am". I said, "So am i". Scott said, "Hey hold up" .. and he went out into the hallway and the bathroom and came back into his room with a wad of tissue and locked his bedroom door. "We both kinda saw each other downstairs anyway, i have to get off you down with that?. I was nervous as hell, no one knew i was bi or gay or whatever.. i nodded my approval.. and Scott pulled down his jeans to his underwear again. I could see his rock hard dick, it was nice. I did the same and put my hand down my underwear. Scott made comments about how hot the girls in the pictures were and how he'd like to fuck them. I didn't hear anything he said because i was numb with electricity shooting through me. Scott finally pulled down his underwear to his ankles with his jeans and started stroking hard. I couldn't believe it and slowly pulled my underwear down and couldn't take my eyes off of his perfect 6" dick! We were staring at each others dicks, only the porn mag inbetween us as we lay on our backs with our legs off the side of the bed jerking furiously at this point! You could hear us breathing heavily and the sound of our hands on our dicks, jacking ourselves. Scott said quietly, "I'm going to cumm, Fuck! I'm going to cumm". I said, "Shit, so i am Fuck!" We both let out groans and sighs as we both shot loads on our stomaches!!!!!!  Scott lied there, exhausted, and said "Fuck i needed that." I was grinning from ear to ear and couldn't believe how hot that was and said "Me too man! Thanks". .......Afterwards, Scott cleaned up, we started talking about guitar again like nothing ever happended at all. I packed up my guitar and said i'd see him in school and took off ... On the way out Scott said, "Hey you should sleep over some weekend" ... and grinned.