I'm a bit surprised that this one is not part of the library... For me i'ts obvious.
Someone did post a nice version with the planet and the hitchhiker thumb and those words. I have it on my calculator but I don't remember who made it.
viewtopic.php?p=7504#p7504? I like that better.
The last one in the TalenPhilips collection is the one I was referring to. It's one of my favorite off-images.