What is the worst joke you have ever heard?

You know what...I hate all those jokes that make fun of people's names; especially someone's mom and dad's name and poking fun at surnames and etc. I don't feel the funny part in those. There were a couple of my ex schoolmates at school last time and I just didn't find them funny and stopped myself from joining in their 'fun'.

This was the worst joke I ever heard and it resulted in three people getting fired at my job... It was the day that President Obama was sworn in (that's what upset the people so bad) The guy said, "How did Obama win the election?" everyone looked at him as if to say "How?" He said, "He promised everybody a lifetime supply of fried chicken." Now when he said this, he started laughing hysterically and nobody found it funny at all seeing as though he was the only person standing there that wasn't black..he ended up getting jumped and beat up pretty bad..that was the worst joke I ever heard..

Here is one... Why did the chicken cross the road?? Because it wanted to get to the other side.. Why did the bubblegum cross the road?? Because it was stuck to the chicken's foot

probably any of the "interrupting cow" jokes. people just yell "moo" if somebody answers.