Here are some randomly selected joke topics beginning with the letter 'M'
Mushrooms
What do you call a mushroom that is always happy?
Fun Gus.
Music
Patient: I feel like a sheet of music.
Doctor: Please wait a minute while I look at your notes.
Music
Did you hear about the idiot who put his radio into a refrigerator?
He wanted to hear some cool music.
Mumble
When in charge, ponder. When in doubt, mumble. When in trouble, delegate.
Mummy
Why was the mummy so tense?
He was all wound up!
Music
What musical instrument does a skeleton play?
A trombone.
Music
If music be the food of love, I need re-tuning
Mummies
Why are mummies so selfish?
Because they are all wrapped up in themselves.
Mushrooms
Politicians deal with the public on the basis of the mushroom policy: Keep them in the dark and feed them manure.