1.) An action done by humping your bike in midair; pumping and giving more humps gives it more style.
2.) A word used to be compared to a MILFs hotness.
3.)Zachs Mom.
1a.) That Mary Ellen he did off the box jump was huge, it also looked better since he humped it forever!
2b.) Damn, that MILF is almost Mary Ellen material.
3c.) Good morning, Mary Ellen.
