Why aren't there any knock-knock jokes about the United States?

Why did the little boy cut off all the branches on the Christmas tree?

What do construction workers do at Labor Day parties?

Where's the best place to grow flowers in school?

Why are monkeys lousy workers?

What dogs are always lying to you?

Do dads have fun on Father's Day?

Why are farmers so laid-back?

What candy is always getting in fights with each other?

Why was the pirate late for work?

Which animals make the best football players?

Why do Olympians never overheat?

What car always breaks the rules?

Who is a fruit's favorite celebrity?

Why don't basketball players vacation well?