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1) Asshole. Poopie = ass and trim = hole. This phrase was used by Kevin Smith in Mallrats and Dogma as a sort of inside joke. Usually used when someone is coming out of a dazed state.
1) Willam is staring at the 3-D art and is startled.
"Poopie trim!"

2) Rufus is sleeping on the train and wakes up.
"Poopie trim!"
by Mike3 November 21, 2003
anal sex; "getting some trim" is sex, so poopie trim is butt sex
That chick from the bar last night was a nasty bitch! She let me get some poopie trim.
by your mom September 07, 2003