Top Definition
To have sex with a person that has had sex with the one and only Knapper

To poop thou pants at a fraternity house

To take advantage of pledges and unsuspecting drunks
I got Knappified last night and I might have an STD now.

I knappified the heck out of his bed.

He was knappified big time at the bar, she blind sided him.
by JET Money July 03, 2008
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