I saw this PhD comic and had to share it because I think all grad students have experienced a complete and utter brain meltdown. For me, it occurs when I'm being asked a barrage of questions that I can't answer without my lab notebook -- which is, of course, unavailable at the time. I go into a blank stare, mumble "Ahh ... I don't know off the top of my head ..." and slink slowly toward my office to procure the necessary documentation.
