Donny Dutch

A sexual act in which on participant eases the back of there head in-between the buttocks of the other participant and gently nods to tickle the sensitive areas of their lovers buttocks. Meanwhile the other does the same resulting in a sort of "reverse 69".

"It'll be 20 for oral, 40 for vaginal, and 80 for a Donny Dutch."
"This girl was so nasty in bed. She wanted a Donny Dutch. I'm still trying to get the smell out of my hair."