Is there a word for a false definition given in jest?

I don't know if such a word exists, but I'm interested to know it if it does.

An example of what I mean would be:

Politics - a latin word stemming from
Poli- — meaning many
Ticks — meaning blood-sucking butt lumps

Or this snippet about oil:

ALL - noun. A petroleum-based lubricant.
Usage: "I sure hope my brother from Georgia puts all in my pickup truck."