The deuce caboose is a quite humorus term refering to the toilet and defacating, dropping a deuce.
"Dude, that mexican food went right through me! When I got home I headed straight for the deuce caboose and dropped one, wait I mean two!
by Dustin Crew November 3, 2007
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To defecate in one's drawers. Typically used to affectionately refer to a toddler pooping in their diapers. Adults see the droopy diaper from behind the toddler, or the caboose / rear-end.

Refer to related phrases: drop a deuce, deuce
Ohhhh, how cute! Your toddler is waddling away from the table...wait a minute! There appears to be a 'deuce in the caboose' of theirs!
by HeavyD in CH April 3, 2011
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Inserting two fingers into the anal cavity, then spread your fingers apart like your saying peace.
You can ease a woman into anal if you slowly deuce the caboose
by beatboxboy21 March 18, 2021
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