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A homosexual term for two biological brothers.
A word made up of Faggot and Incest.
Originally my word.
You did what with your bro? Dude, that's totally fagcest.
by Riyoko October 10, 2007
Where a guy has gay sex with another guy related to him.
That guy and his brother have fagcest.
by The Fury 13 October 18, 2010