Donkey Knees
When you have explosive diarrhea to the point that you drop to your knees in pain.
Hey, dude why weren't you at Lillie's party last night?
Sorry dude I had Donkey knees!
Sorry dude I had Donkey knees!
Donkey knee
Much like a Donkey Punch but insread of using one's fist they use a flying knee thrust to ensure an epic orgasm.
I was pounding her asshole and leaped to my feet to jump and deliver a VICIOUS donkey knee