Does gravity affect measurements?

Seems like if I measure while laying on my bed I get a lower number. I'm starting to believe my size is more of a 6" than 6 1/2" :|

On Jupiter, I have a 14" penis.

lol

It sure does on balls! Just wait, you'll see...

A bunch of things could effect measurements like how much water you consume, how horny you are, before and after PE, how ho is the temperature.... but gravity I don't know about that :)