Bathroom Jack-Off
When I came home on leave while in the Navy, my dad caught me jackin' off in the bathroom. He just came in. He startled the hell outta me. He just grinned and took a leak in the wash basin.
I just leaned back and continued jacking off while watching him take his piss. Watching him realy excited me and I stood up next to him and let my cum fly into the sink bowl and as I did so he beat off at the same time.
It was so sexual for us we then jacked off each other right after. Needless to say we are jack off buds when we can get together.