Wiping your finger that has just been wiped around the rim of your butthole and or your crotch sweat, followed by:
Swiping this finger in an unsuspecting friends face.
*Nick wipes his hand on Josh's face*
Josh: Why the fuck did that smell like dead asshole?
Nick: Because I just smooped you.
Michael: Fight me.
Josh: Take this!
Michael: *Is protected by Smoop*