When you fart in a elevator right before you get off, sending it to its next floor with a smelly 'meal' on board.

Also known as a dookie lift in England.
I just left a dumbwaiter in that lift (elevator).

Ow man, someone left a dumb waiter in here, lets get off at the next floor.
by ill-grass October 09, 2012
In Quiz Bowl, the one object that a player is unbeatable to. Each player will have their own unique dumbwaiter, that they will always get, no matter how hard you study. This term is coined from the original "Dumbwaiter" drama by Howard Pinter, the dumbwaiter of Albert Ok of SLHS.
Albert: *buzz "DUMBWAITER!?"
Everyone else: "DAMN IT I READ THAT THING YESTERDAY!"
by SLHSQB March 17, 2011
Not to be confused with the small elevator-like devices found in restaurants, hotels and such, "dumb-waiter" refers to the idiot - and there's always one - serving hors d'oeuvres to the bride and groom at a wedding who allows their tray to be pillaged of anything edible before they even get to the wedding party. Thus, they only have Spinach Vomit-bombs left by the time they get to the bride and groom, who wrap a bunch of these disgusting ass nuggets in a napkin to later pelt the wait staff with when no one's looking.
"Not surprisingly, the maitre d' assigned the dumb-waiter to bring hors d'oeuvres to the wedding party, and the fat shits lumbering up the front steps emptied the tray before the guy even got there."
by JustAnotherGuy March 15, 2010

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