My friend Theresa was discussing how you test thermal sensitivity in mudskippers - usually you say a fish is at their maximum tolerable temperature when they lose their ability to be buoyant in the water column, but that doesn’t work for mudskippers, since they sort of hop. 

So! What they do is they gently poke the skippies and if they tip over and don’t right themselves, they’re at their maximum tolerable temperature!

Me: “You mean you go skippy tipping?”

*class erupts with laughter*

*five minutes later*

Theresa: I need that on a t-shirt….