Abbreviation for "Up The Butt Club", a slang term for a homosexual.
"Jim was feeling fine until he found out Hank was a member of the UTBC."
ayon kay ChelseaT ika-11 ng Pebrero, 2008
1 more definition
Utbc = Used to be called.
I utbc Carl, but now I'm known as Carlos.
ayon kay bcsw ika-21 ng Marso, 2009