Answer:
Some are clean and some are dirty, but all are meant to get a chuckle. Most like it, some takes offense from it.
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
Why do plants hate math?
What did the blanket say to the reassure the frightened bed?
A DJ does this to records. I do it to mosquito bites.
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?