internet acronym for Bitch Get The Fuck Out.
used most commonly when you want someone out of your chat but he/she wont get the fuck out, in which case you say bgtfo. also can be used as B,GTFO when you want more emphasis on the "Bitch"
me: cmon ashley i just want to talk to my gf in private for a little while can you plzz leave the chat for a bit??
ashley: no i wanna listen to all this drama!!
me: cmon plzz
me: you know what? ive had enough of this shit. BGTFO
ashley1564 has left the chat