To kiss. All the high school kids go up there to chew face in their cars.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
tv. to kiss. (More jocular than crude.) A couple of kids were in a doorway chewin’ face.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.