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1.
Trouser Gravy is ejaculate. Aka Jizz, Splooge, Cum, etc.
Brenda: Man, I could really go for some trouser gravy in my fuzzy mimosa right now!
by brianxymox January 29, 2008
 
2.
Running shit.
My after drinking that dark beer all night I have mad trouser gravy today.
by Tom Braski December 14, 2003