Here are some randomly selected joke topics beginning with the letter 'M'
Menu
Waiter, waiter what's on the menu tonight?
I'm not sure, sir, but it looks like last night's special.
Mercedes
What's the definition of mixed emotions?
When you see your new mother-in law backing off a cliff in your brand new Mercedes.
Men
How does a man show that he is planning for the future?
He buys TWO cases of beer.
Men
Men are like a pack of cards, you need a heart to love them, a diamond to marry them, a club to batter them, and a spade to bury them.
Menu
Diner: Excuse me, waiter, but is there spaghetti on the menu?
Waiter: No, but I am sure that we have some in the kitchen.
Merrier
Knock, knock.
Who's there?
Demure.
Demure who?
Demure the merrier.
Men
What's the best way for a woman to get rid of excess fat?
Divorce him.
Mermaid
Did you hear about the crooked mermaid?
She was arrested for starting a crime wave.
Men
How many men does it take to screw in a light bulb?
Only one, but you have to nag him for a fortnight first.