Top Definition
Stands for "Fuck That Butt Real Good"
originated from a goon story from SA forums.
UT: Im off to see Amanda again, were going to "hang out"
GS: You go man and make sure you FTBRG
by DMZ101 April 17, 2007
7 Words related to ftbrg
to Fuck (or fucked) that butt real good
He really FTBRG last night.
by UnknownGoon765 April 15, 2007

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