Prof. Y., my entomology professor, is experienced, bright, very friendly, and hilarious!
Prof. Y., "(not exact quote) Everyone is wearing moth spit and eating bee vomit, and thinking they're things of luxury ... like the next time you wear silk and taste honey."
Prof. Y., *points at the picture of a dragonfly and looks at a boy* "Tell me what's the family of this sucker."
Me, "It's not a sucker. It's got chewing mouthparts!"
*the whole class laugh*
Prof. Y., "Okay ... *points at the picture again* This chewer."