No other cock
I couldnt play without pengrah there and visa versa
My common line when we were picking up. I would have a give hitting on me, I would usually throw out the line (after I know they wanna play)
"I would love to fuck you, but you have fuck my wife too"
You would be surprised, that works. haha..
Other than that, the obvious ones, protection vs disease is a priority for us and who we are involved with.