Sec
Word used to define any amount of time it may take you to return to the phone or reach a destination; A word often used to deter another phone call when on the way to a party or other social gathering; another way to say "Hang on".
"I will be there in a sec," He told his friend as he was 20 minutes away from the party.

"He told me he would be here in a sec, but its been nearly two hours!!"