The act of wiping your ass with your hand (preferably while very sweaty or having recently shat), proceeding to shake another's hand.
stink palmed, stink palming
Came into common usage from the film Mall Rats.
The guy at the Quick-E-Mart was an asshole, so I stink palmed him.
If you really hate someone, give 'em the stink palm.
-The act of picking your butt and shaking someone's hand
-The act of farting on your hand and then shaking someone's hand
-The act of wiping your recently-shat-on ass with your hand and then shaking someone's hand
That disgusting bastard stinkpalmed me right after he took a shit.
To contaminate something with your grubby, sweaty hand. (Has nothing to do with wiping your ass, dumbfucks).
The guy working the drive-thru at DQ stinkpalmed my change.