Here are some randomly selected joke topics beginning with the letter 'T'
Tail
Knock knock
Who's there?
Lionel
Lionel who?
Lionel roar if you stand on it's tail.
Tails
Why do elephants have short tails?
Because they can't remember long stories.
Tact
Tact: The unsaid part of what you are thinking.
Take a bath
What breed of dog loves to take a bath?
A shampoodle!
Tablecloths
DINER: How often do you change the
tablecloths in this establishment?
WAITER: I don't know, sir, I've only worked
here six months.