water crunch is an Indian snack locally known as 'pani puri'. The crunchy piece (puri) is cracked opened and filled with a favoured combination of vegetables, spices, sprouts etc. and finally filled with flavoured water (pani). They are also locally known as golgappas. water crunches' vendors can easily be found on street-sides of Mumbai, Kolkata.
Somewhat inadvertent "crunches," or quick contractions of the abdomen, that some women perform during orgasm; especially during multiple orgasms.
Alternatively known to as "O-sit-ups."
"Oh! Oh! Oh! Oh! Oh! Oh! Oh!" Tami cried during her "workout." She was too lazy to get up, put on spandex, lie on the floor, and do actual crunches, and preferred instead to stay in bed while Josh gave her o-crunches.
My girl was so wet seeing me in my tight workout gear on ab day. I told her to park it on my face for some creamy crunches and I'll finish her, while I finish sit ups.