buckthorn
The act of molesting a female while intoxicated by slowly maneuvering your arms around her while seated next to her on a couch. Similar to the plant known as buckthorn which spreads quickly and is hard to control.
Jacob: dude, what's Josh doing over there with that chick?
Ryan: he's totally got her pinned down with the buckthorn move.
Ryan: he's totally got her pinned down with the buckthorn move.