Never seen a friends dick, although I did visit a friend one time in the early morning, and I was sitting on the couch, and he got up to walk to the kitchen, and I got a flash of his dick throught the sliy in his pajama's as he walked by.

Other than that, never had the opportunity. Funny thing is I have been in a bathroom couple of times with co-workers and no one ever pony's up next to me, they always head to the stall. Actually the only person that wasnt afraid to whip it out was a gay co-worker but the bathroom was to dark to even see anything