Answer: brb

AnswerCrossword Clue
BRB

"One sec, gotta pee"

BRB

"Hang on a sec," to a texter

BRB

"Hang on a sec," online

BRB
Texter's "I'm away for a moment"
BRB
Cybertalk for "I shall return momentarily"
BRB"I need a short break," in chat rooms
BRB"Just a minute," in texts
BRB"Putting the phone down for a sec," in textspeak
BRB"I need to step away for a sec," in an IM
BRB"Returning soon," in online shorthand
BRB"I'm away from the computer for a few minutes," in three letters