be right back

be right back

As phrase used when one has to leave but intends to return very soon. Be right back, someone's knocking at the door. I have to use the bathroom—be right back.
See also: back, right
Farlex Dictionary of Idioms.

be right back

and BRB
phr. & comp. abb. I will return to communicating shortly. Excuse me, BRB. He’s out of pocket, but he’ll be right back.
See also: back, right
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • brb
  • alright
  • If it was a snake it woulda bit you
  • if it was a snake, it would've bit you
  • am I right?
  • right now
  • right of way
  • right-of-way
  • (the) right of way
  • up in (one's) grill