To have an illict affair with someone; to cheat on someone; to cheat with someone.
"I wanna see Amber's boobs at the party. You talk to my girlfriend while I sneak hit."
by The Sneak Hit Master February 02, 2004
to bwn someone unexpectedly
I was not expecting it but I sneak hit Amber.
by Sneak Hit Master February 03, 2004