Similar to a donkey punch, but usually performed with a family member. The male has inbred sex with a 1st cousin or closer relation & as he ejaculates, punches said family member in the back of the head. In some cases, also followed with a Cleveland Steamer for good measure.
Q - What the hell is wrong with those cross eyed kids down the street?
A - Oh nothing, their mom just got Woodsfield Wallopped by her cousin Jim Bob.
STEPH - An acronym for a disgusting dirty ho who is exceptionally hungry for something nasty.
Also accepted substitution:
When I tried to make love to my wife, I noticed there were patches of hair missing from her bush. When asked about the maingy bush, she replied "Meh, I tried to swing both ways, but got Steph-ed. Man that'll never happen again!"