I first heard of that from a friend when we were rolling on ecstacy pills. He went to pee and came out all confused sayin he thot he was pissing but was cumming.
Any way years later i started banging meth and yeah it seems to happen right after a big one, the kind that leaves u shaking a little. And strangely it happens when taking a shit sometimes. I best understand it to be for different reasons whennit happens at different times. The initial rush is pure dopamine and the later on "leakage" is from usually being very tense and constricting my muscles.
I have the prblem of getting hard when on a really good one too, but man... heres my dream goal
Have a fat shot all ready and aet aside, have a girl start sucking u or riding u and have someone else waiting with the loaded syringe. Right as im about to cum, have them hit me, hopefully simultaneously cumming with the rush and probably so hard that i may pass out.. yes.