- Teacher, do you have some tape I could borrow?
- I got Scotch tape, Masking Tape, and double-sided tape.
- Hmmm, I'll take some double-sided tape.
- Here you go.
... he goes off for a couple of minutes and comes back ...
- Which side of the double-sided tape has the tape?
- It's double-sided tape.
... he stares at me ...
- So, which side?