Here are some randomly selected joke topics beginning with the letter 'E'
Elephant
What is red in color and likes to eat peanuts?
An embarrassed elephant.
Electric shock
Did you hear about the baker who got an electric shock?
He stood on a bun and a current ran up his leg.
Elementary
Knock, knock.
Who's there?
Elly.
Elly who?
Ellymentary, my dear Watson.
Elections
A politician is someone who shakes your hand before an election and your confidence after it.
Elections
Knock, knock.
Who's there?
Alec.
Alec who?
An election is held about every four years.
Elephant
Why wasn't the elephant allowed on the plane?
Because his trunk wouldn't fit under the seat in front of him.