Here are some randomly selected joke topics beginning with the letter 'M'
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.
Merrier
Knock, knock.
Who's there?
Demure.
Demure who?
Demure the merrier.
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.
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.
Men
Why is it difficult to find men who are sensitive, caring and good
looking?
They all already have boyfriends.
Men
All men are idiots....I married their king.
Menu
Waiter, waiter what's on the menu tonight?
I'm not sure, sir, but it looks like last night's special.
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.
Mermaid
Did you hear about the crooked mermaid?
She was arrested for starting a crime wave.