pinch a loaf, take a dump, you know.
It's associated with "going number 2", because number 2 is "the deuce"

To void feces from the bowels: to defecate, to "take a shit."

("deuce" comes from the commonly used "number 2")

To defecate . To relieve one's self by fecal expulsion from one's anus.

Origin: the frase could have been allocated to this meaning due to the assertion that the dump would be or feel like it was a two pounder. Hence the word 'deuce'. Or, the more commonly accepted origin of this frase is a response to a euphemism for taking a crap: 'going # 2'.

The act of taking a dump, pinching a loaf or dropping the kids at the pool.

1. The act of deficating.
2. The anticipation of deficating.

V. To take a crap, create feces, or just give up a massive shiest.

Pulling off a surprise that is most likely shocking; of course this is according to Michael Scott.