A male homosexual who has yet to come out of the closet (or trunk).
A Scottish slang term for a male homosexual.
For example,

1. Did you see Dave looking at that bloke, I think he is a bit of a trunk monkey.
2. I feel sorry for Dave that he hasn't come to terms with his sexuality yet. He still tries to make his friends think he likes girls, but we all know he's a trunk monkey!
by Dick Splash 2 June 13, 2009
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1.A bitch that likes having sex in the back of limos with multiple partners for drugs liquor and money,
2. the male sexual reproduction organ when used from behind
1.Man I thought that girl was sweet but my boy told me she aint nothing but a trunk monkey ho
2. Just wait till she sees my swinging trunk monkey
by Anonymous August 9, 2003
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opposite of "boo" or "beau". asshole, dickhead,fucker. all not nice things to say to people rolled into one word.
man, you're a fuckin' trunk-monkey for leavin' me at the club!
by shalae December 30, 2005
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Getting having your sex with your bitch while she sits on the trunk of your car
Me and my old lady went out lastnight and I got me some trunk monkey before I took her home
by d.key April 1, 2006
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