Everyone that has lived some scientific experience on a lab (or on a wet lab as Javi says) knows that there are quite a lot of time between some centrifuge steps, when you wait for an electrophoresis to run, etc.

So, we all try to fill those boring gaps with...

Betting on who is gonna spend the night in the lab
taking a nap
I'm hungry
Simpsons' avatars of the Valencia Team