Why didn't the bear leave home?
He could not bear leaving his family.
Why didn't the bear leave home?
He could not bear leaving his family.
Listen here, nimrod. The joke is a pun because the word "bear" is used in two different ways. A bear is an animal, but "bear" can also mean to endure something difficult. The bear in the joke couldn't "bear" (endure) leaving his family. Get it now, dummy?