To lift up your top lip to your nose, revealing your front teeth, and letting it flop down, slamming against your two front teeth, making a "ploop" noise.
Kids will laugh their asses off if you slam the door on your teeth. They're very big and beautiful, so it'll be very loud.
by Weirdosis June 03, 2018
Refers to da "scrunched-eyelids and bared-teeth" expression of shocked remorse dat you assume after you walk through da door into a fairly-quiet room where others are present, and then accidentally cause/allow said door to close more forcefully/noisily than necessary. Extra points if you also "stop dead in your tracks" when exhibiting said agonized facial-contortions, since it shows da nearby startled fellow-humans dat you are indeed caringly-regretful enough for having caused said thunderous thud dat you are willing to totally "halt operations" for a moment to show everyone in no uncertain terms dat said loud noice was defintiely "not on your flight-plan".
Displaying da post-door-slamming wince might be less expected of you during da winter months (especially if da noise you made was only mildly-to-moderately excessive), since presumably most folks would actually **prefer** dat you close a door more quickly/firmly than usual on colder days; people always appreciate your doing a "quick slither-though and yank da door shut behind you" maneuver when entering a room from da chilly outdoors, in order to conserve hard-won heat dat said room's present occupants have had to gradually create over da past hours by either keeping a blazing/roaring fire going or burning lots of costly heating-oil.
by QuacksO December 24, 2019