Because they all joined
You're too young to smoke. Sorry, it's the first joke I ever learned, and I haven't ever seen it posted.
Slow down and use some lubricant.
Banta: Because people started licking the wrong side of it for pasting them on the envelopes..
Because they won't stop to ask directions.
Because he wanted to be a Drill Sergeant
He wanted to join the Apple Core (Corps).
Baked ham.
You can tune a piano, but you can't piano a tuna!
They didn't know you could get Britain to leave by voting.
Canada.