where ur dick flops and falls on to the bellyurcum flops off and hits you in the eye!
last night my cum hit me in the eye, must've been a cumflop.
simon: oi mark what happened to your eye.
mark: nothing just the wife sucked me off then my dick hit my belly button
simon: ah mark, that my friend is a cum flop.
When you lean forward usually to pull up your pants in a public bathroom, and your turd breaks off long ways and does a front to back sideways splash, splashing toilet water from the bowl up onto your ass
I was dropping a deuce at work and an coworker walked in, I pulled my pants up from around my ankles as I was braking one off and it did a Smelly Flop into the bowl.