Title of this entry is from a running gag, meaning "That's the entrance, that's the exit, and here's Taguchi!"
Setting: 3rd period pre-algebra class
Context: Reviewing rules and expectations of the classroom. I tell my students to grab lots of tissue before they sit down so that they don't have to get up to get it.
Student: But what if my nose suddenly starts running?
Me: Then you better catch it.
Half the class got it, half didn't. I thought it was pretty clever. Heh.