I would tell a joke about pizza, but it's too cheesy.
There were four men in a hot air balloon and it was falling. The only way any of them were to survive was that three of them had to jump off, and the last man could live. The first man to jump of was an Englishman, and jumped off saying, "Long Live Queen Elizabeth!". The second man to jump off was Japanese, and jumped off saying, "May Japan thrive!" Then a Texan and a Mexican were left. The Texan threw off the Mexican saying, "Remember the Alamo!" (If you didn't get it, you may have to do some research.)