pop back
To return (to some place) very quickly or briefly. A: "I think you left your watch here." B: "Dang it. OK, I'll pop back tomorrow to pick it up." I forgot to remind Darlene about the meeting in the morning—let me just pop back real quick to tell her.
pop back (for something)
to come back to a place for just a moment. Okay, I think I can pop back for a minute. I have to pop back for something I forgot.