Are you reasonably sane? Can you shoot your load without wanting to dispose of the evidence of you sin (aka, me)? Do you get paranoid when you thing of hard, veiny cock, because you're worried your wife can smell your filthy thoughts?
Do you have a good sense of humour? If you love Mrs Brown's Boys, Chubby Brown and Jim Davidson, then, as the ladies on Plenty of Fish say: Jog on!
If you have a penis so big I could slap myself with it and end up with mild concussion?
If you have a *massive* penis, and you're insane and don't understand the point of jokes, I can put those qualities aside, and just make friends with your huge cock.