107
NASA scientists says astronauts should not masturbate in space
(www.indy100.com)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules
This is a science community. We use the Dawkins definition of meme.
I don't think there will be any problem if you do it with just one hand instead of two, since you'll need the other hand to hold onto something. Although they have all sorts of straps there, so the problem is completely made up.