curl one's lip

: to form into coils or ringlets

: to form into a curved shape : twist

: to furnish with curls

: a lock of hair that coils : ringlet

: something having a spiral or winding form : coil

: the action of curling : the state of being curled

: either of two fleshy folds that surround the mouth in humans and many other vertebrates and are organs of human speech essential to certain articulations

: back talk

: a fleshy edge or margin (as of a wound)

: insincere

: produced with the participation of the lips : labial

: to touch with the lips

: utter

: to lap against : lick

: fat : fatty tissue : fatty