Backstabbing Liar

From This Might Be A Wiki

song name	Backstabbing Liar
artist	Mono Puff
album	The Steve Calhoon Years, It's Fun To Steal, TMBG Clock Radio (as Back Stabbing Liar by "Momo Puff")
year	1998
first played	Sep. 19, 1997 (5 known performances)
run time	2:35
sung by	John Flansburgh

The version on It's Fun To Steal runs slightly faster than the one on The Steve Calhoon Years. They are otherwise exactly identical.
"is also a strange composite of true stories, but everybody knows some story like this."
From monopuff.org: The Mono Puff song "Backstabbing Liar" can be heard in the motion picture The Rage: Carrie 2. The song is heard for a good 30 seconds to a minute during the film, which is longer than any pervious occurrence of a They Might Be Giants song in a movie. As it turns out, a Bar-None representative pulled some strings to have the song appear in the film. Oddly enough, the song was not included on the actual movie soundtrack.
The iTunes Music Store version is listed as "Back-Stabbing Liar".