it happens to me all the time - and not even when i cum, just generally during sex!

it only happend when i'm lying flat on my front and he's takin me from behind tho...

hehe..the first time it happened it soaked right through the blankets and into the mattress! hmm, but it's not been that much again, probably had something to do with the..ahem..shower i had earlier, if you get my meaning