como una cabra jarta papeles

[JUNKMAN]

Not sure if this is the right section for this - but here goes
I have a t shirt that has a picture of a goat eating papers with the above lettering i.e. como una cabra jarta papeles.
As far as I can tell the actual translation is 'like a goat that eats papers', but I'm guessing that it must be a slang term for something.
Does anyone know what that might be ?

[sir.prize]

http://translate.goog...h24Bo&ved=0CB0QrgYwAA