pentat

A temporary tattoo applied with a pen or marker.

That's a nice pentat. Did you use a Sharpie?

pentation

pentation is the fifth operation preceeded by addition, multiplication, exponentiation and tetration.

If you do 3 pentat to 3 it will be 3 tetrated to (3 tetrated to 3) which is a power tower 7,625,597,484,987 tall.
Person 1:what is pentation?
Person 2:*takes 6 hours to explain it*

pentate

A verb used to defecate for a significant period of time.

Hey bro, I have to go pentate rn.