Chain Jokes

How do knights communicate?
They use chain mail.
If there's a Tim Horton's chain, should there be a Lanny McDonald's? Or Doug
Harvey's? And what about Ron's Francise?
I have an idea for a chain of Elvis steak houses.
It will be for people who love meat tender.
Onions have had a long process in the evolutionary chain. They have evolved into today's onions from onionderthals.
Why did the football referee have trouble measuring the first down?
Someone was yanking his chain!