(simile, informal) to lie constantly, to be a born liar

(simile) old as the hills, old as time

(simile) solid as a rock, rock solid, tough as nails

(simile) stiff as a poker, stiff as a board (stiff, both physically and metaphorically, rigid, unbending)

(simile, informal) to scream one's head off, squeal like a stuck pig

(simile, vulgar, derogatory) to drop like a bad habit, to dump (to end a relationship with someone)

(simile, informal) like crazy, like you wouldn't believe, like nobody's business, as can be, as they come

(simile) to sleep like a log

(simile) smart as a whip (very smart, very shrewd, very clever)

(simile) to come a day after the fair, to close the stable door after the horse has bolted