The chain is too long.
He tractor down
Because they cantaloupe. (The wife thought of this one... hopefully nobody else has posted it)
Just another reason to teach your cat to read.
Because they lactose.
The man says, "I don't wake up until 10:30."
The motorist. He really shouldn't be driving in the kitchen. (Edit: formatting)
Bacon! Get it?
A bike doesn't start singing when you put chains on it.
Nostalgia