I got hooked on masturbating with a basketball when I was a teenager. I was playing around with a ball one day and I rolled it against my dick. It felt good, even through my clothes. After that I rub the ball against my dick, first through my pants abd then just in my breifs.
One day I decided take off my breifs and rub my bare dick against the basketball. I was hooked. I liked the feel of the ball on my shaft and head and discovered that rubbing it acrosss my nipples was a real turn on. I think the pebbled surface and rubber make it feel really good. The smell of my sweat on the ball also got me excited plus the fact that I'm doing something 'dirty' with a basketball. Coach would be pissed.
In my 20's I started using three basketballs. I make a artificial vagina with the balls and fuck them while I'm sitting with my back against some stacked up pillows. The balls rub my dick shaft and head, my balls, and my nipples at the same time. I can control the pressure on my dick. I like to suck on them like big tits too. Sometimes I cum on the balls and sometime I finish off with my hand.
New basketballs feel the best because they have a tacky surface but when I was a teenager I fucked the ball with which I used to shoot hoops. My favorite right now are the Wilson Indoor Game balls. They have a great feel that last a long time as long as you clean them every so often.