Every Second Counts

Alright listen up, buttercup. The teacher says time can't count, meaning time is abstract, it doesn't work with numbers, you can't literally count time like you count chickens. But the student is all like, "Every second counts," which is a play on words, get it? "Counts" can mean both "is important" and "can be counted." The teacher's exaggerated reaction shows they recognize the cleverness of the pun. You probably didn't, you mouth breather.