(figuratively, transitive with sur) to cut one's teeth

(informal, figuratively) to be knackered, to be exhausted / (informal, figuratively) to be on edge

(idiomatic) to remain silent

sabre-toothed tiger

(figuratively) to smile from ear to ear, to smile all over one's face, to grin like a Cheshire cat

(equestrianism) to champ at the bit / (figuratively) to get the bit between one's teeth

(idiomatic, sarcastic, figurative, adynaton, hyperbolic) when Hell freezes over; when pigs fly (never)

(simile, informal) to lie through one's teeth, to lie brazenly, shamelessly

(figuratively, informal) to feel like one is going to throw up (usually because one has eaten too much and is stuffed to the gills)

(figuratively, derogatory) to be unscrupulously ambitious