"I'll return in a minute," in instant messaging shorthand

• Texter's "I'm away for a moment"
• "Hang on a sec," in texts
• "Just a minute," in texts
• "Gimme a sec," in chats
• "I'm away from the computer for a few minutes," in three letters
• Texter's "Need a short break"
• "I need to step away from the conversation for a second," in a text
• "Putting the phone down for a sec," in textspeak

Wiktionary Word definitions in Wiktionary
init. (alternative case form of BRB nodot=1 English) (gloss: be right back).