Go lips

To aggressively kiss someone on lips.
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Go lips (with sb):
Grab someone's shoulders, and put your tongue deep inside their mouth in order to kiss.
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French kiss, deep kissing

GUY1: Hey dude! Les' go lips!
GUY2: Nah... I ain't doin' that gay shit.
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GUY: That movie was insane! They went lips at the end of the fight.
GIRL: Eww... Can you cease it already!?