A crusty piece of cloth or sock used to wipe ejaculated semen from the chest of a man who has just engaged in onanism.

Or

A person lacking in intelligence, who has as much use to the human race as material used to wipe up ejaculated semen.
by Peachfish July 31, 2011
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Green flannel is a failed SoundCloud rapper who deletes his page when everyone finds out about it .... trash talks everyone
Omg look it’s green flannel
by Green flannel April 24, 2019
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When a girl is dating another girl they may wear matching flannels to hint at it!!
Hey did you see Erica and Simone wearing those matching flannels today? What a cute couple!
by Userhasit November 2, 2018
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n. a person who desires and covets many flannel shirts.
Levi: I don't want to go shopping with you, especially if we are going to Sears.

Angela: Why not?

Levi: You're such a flannel whore!
by Angelevi October 9, 2009
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Any public display of affection performed by homosexual mates that share masculine traits.
I thought they were lumberjacks until they shared some Flannel Kisses. Now I know they were just working on the same wood.
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