Lightbulb joke
Q: How many statisticians does it take to change a lightbulb ?
A: Walt Pirie to hold the bulb and one psychologist, one economist, one sociologist and one anthroplogist to pull away the ladder.
Knock knock joke
Knock Knock
Who's there?
Custer!
Custer who?
Custer a penny to find out!
Q: Why was Santa's little helper depressed?
A: Because he had low elf esteem.
credit ahajokes