Who knows

Who knows memes

Jokes

Relish

To master puns, you got to relish them first. That's how I must(ar)d it. Who knows, maybe you will ketchup to my level.

Baby

Q: The person who makes it doesn't say what it is.

The person who receives it doesn't know what it is.

The person who knows what it is doesn't want it.

What am I?

A: A baby.