Possible Clues:

• “1 sec”
• 'Gimme a minute,' in an online chat
• "One sec," in a text
• Texter's "Just a moment"
• "I'll return in a sec," in texts
• "Leaving the chat for a sec"
• Short "I need a short break"
• "Gimme a sec!"
• "Gimme one sec," in a text
• "gimme 1 sec bro"