1. To lose; specifically, to chew on something of which more was bitten off than one can. Probably related to gnashing of teeth.
2. To bite the bag; See bagbiter.
A hand gesture commonly accompanies this. To perform it, hold the
four fingers together and place the thumb against their tips. Now open and
close your hand rapidly to suggest a biting action (much like what Pac-Man
does in the classic video game, though this pantomime seems to predate
that). The gesture alone means ‘chomp chomp’ (see
Verb Doubling in the
Jargon Construction section
of the Prependices). The hand may be pointed at the object of complaint,
and for real emphasis you can use both hands at once. Doing this to a
person is equivalent to saying You chomper!
If you point the
gesture at yourself, it is a humble but humorous admission of some failure.
You might do this if someone told you that a program you had written had
failed in some surprising way and you felt dumb for not having anticipated
it.