Meaning "I'm not kidding." An equivalent of "I shit you not."

Said by the character Glen (played by actor Sam McMurray) in the Coen Brothers' movie "Raising Arizon"
Person 1: Did you hear that Brad and Jen broke up?
Person 2: No way!
Person 1: I'm crapping you negative.
by FelixPen May 26, 2006
A polite variation on "I shit you not," or "I'm not shitting you," and ultimately, "I'm not lying."
and then he said - I crap you negative - Windows 7 is better then MAC.
by dstikele October 23, 2009
Jam a bastard in it you crap! is something Mom from futurama said before slapping her son.
Mom: Jam a bastard in it you crap!
Son: Ow!
by DJ BioDiesel May 25, 2009
"I must ask you to eat crap sandwiches, you Malthusian monkey molester," is the definitive, empirically tested retort which wins an argument forever, and for which no come back is possible.
Edbogard: .. and so I think that Sartre was essentially in error when he mistook the homology between ontogeny and...

Pasco: Arrgh! I can't take it any more! I must ask you to eat crap sandwiches, you Malthusian monkey molester!

Edbogard: I...

*thud*
by scodder November 15, 2012