Tearing it up.
Kind of sexual but not really.
Pretty much just owning at whatever is happening.

or

The stealing of one's Ham or Ham product

or

Nagging.
Getting on someone's case.
Fucking Up

or

Doing something good; helping. Might sound sexual.
Yo dude, I totally just hamjacked at croquet yesterday.

Bro, that crazy ass bitch just hamjacked my fucking bacon!

Stop hamjacking me bitch!

Yesterday, after the party man, Lauren hamjacked me all the way home.
by Iknowhowtohamjack July 19, 2012

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