I think its very erotic, would love to have my cock rubbed up another mans. A Woman placing them together, sucking them together, or even should I say.. the guys placing them together on their own, wanking or jerking to completion. Yet, I think the ultimate would be double vagina, the extra friction for everyone, to feel another guys scrotum tighten against yours, everyone feeling the pulsing cocks, feeling each others orgasim. ok... not for everyone. Yet for me, that would be the best.
yummmmmmmm!!