A state of intoxication that transforms the usually quiet person into an over-affectionate creepy bar stalker. The sleestack transformation begins to occur after several beers and jager-bombs and ends with his tongue down the girl’s throat in the middle of the dance floor.
"Uh oh...Jeff is turning into a sleestack again." "Somone better save that girl."
by Tsnaumi August 31, 2006