The style of sexual intercourse when the male partner climbs a tree naked and leaps (preferably from a flimsy branch) from a minimum hieght of 2 stories landing his penis directly in the female partner's vaginal or oral cavity thus replicating the way Monkeys have sex.
Sarah: Bart tried Monkay me yesterday.
Titus: Wtf? You were okay with that?
Sarah: NO! He was waiting in the tree I always walk by on my way home from school!