1. The act of masturbating (the bumping of the tip of the penis) and fist pumping at the same time. This act is usually done when watching exciting porn or when someone just really likes Jersey Shore.
2. The act of making the previous definition motions as a dance.
1. Person X: Dude you wanna go down town tonight?
Person Y: Na I rented a gang bang porn and I think I'm going to cheer on the guys by doing the Head Bump, Fist Pump.
2. Person X: How are you banging a different girl every other week?
Person Y: I just Head Bump, Fist Pump like a champ at the clubs.
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.