1.) The art of buying a Mcdouble at McDonalds, going to the bathroom, splitting the sandwhich, jizzing on a patty, and going up to someone whacking them
in the face with both ends of the McDouble.
2.) When A male gets a casual Handjob in McDonalds from a random female.
Originated In
State College, from the Classic S.S.F.
1.) "
Oh my God, Leanne just got a McWhack-Attack from that guy in the panda suit!"
2.) "Every Friday, I got to McDonalds SMASHED at 3
in the Morning and get a McWhack-Attack from all the
prostitutes.