Usually seen as a gay boy and or a complete idiot. A flannel boi is a mean word used by a person/character called DankPrincess. This was first used in november of 2017. This was used to insult a gentleman named Liam. She used it in a very offensive way reffering it in a bad way.
Liam you are a real flannel boi.
Wtf lol, you flannel boi.
We used to have fun, but then this flannel boi came along
Wtf lol, you flannel boi.
We used to have fun, but then this flannel boi came along
by fillakilla12 November 10, 2017
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