The modicum of time--approx. 60 seconds (depending on the capacity of the lunchroom)--one must rush into the lunch line before it starts looking like the line to the bathroom after lunch.
Charles: Hey, Jim, you being chased?
Jim: Not now, Chuck, it's the lunch rush minute! Gotta get to the line before the juniors cut in front!
Charles: Don't bother, it's just turkey sloppy joes. And it seems to be coming out the same way it came in.