ybbt 

Acronym, stands for You Best Be Trollin'

See trolling

Guy 1: Justin Bieber is God's gift to music
Guy 2: YBBT

ybbt by ybbtn July 18, 2010

ybbtn

Abbreviation for "You best be trollin' nigger" or "you better be trolling you jolly african american" and the like.

Mostly used on imageboards, such as the oh-so diverse community of chans.

OP - "So how many hundreds of times have you guys have had sex yet?"

anon1 - "...never"

anon2 - "ybbtn"

ybbtn by motherofjesusgodfuckingloser August 21, 2009