What did the inflatable principle say to the inflatable school pupil when he brought in a pin into his inflatable school?

You’ve let me down, you’ve let the school down, but most of all you’ve let yourself down.

Looking for more? Try our 100 dad jokes, 300 short jokes and one-liners, 50 best one-liners, 200 dirty jokes for adults (18+), all one-liners.