I was putting together a lab lesson for this week, focusing on the skeletal differences between living apes and Old World monkeys, when I’d noticed the distal humerus of this gorilla (Gorilla gorilla, not the most “scientific-sounding Latin names,” right?). Looks kinda like a thumbs-up, I thought. It seemed to say, “Keep up the good work, kid!” And that’s when I knew it was time to get some sleep.