I don't often cry DURING sex, but given the right mood and the right number of orgasms, I laugh and cry all at the same time when it's over. It's not something that happens every time, and the last time it happened, my girlfriend was afraid she'd broken me or something! Her husband (who I play with more often) had to reassure her that this falls within my normal range of post-orgasmic bliss. *grin*