I work at a pet store. We sell various parts of animals for dogs to chew on, including pig ears, elk antlers, and cow trachea.
Someone brings a long stick-like thing up to my register today and asks, "What part of an animal is this?"
I turn it over. Read the label. "It's bovine pizzle."
Customer: "What does that mean?"
Me: "Well..." Must keep my cool... "Bovine means like, cow..."
Customer: "But what part of a cow is it?"
Me: "Um..." I am a mature adult. I will not snicker. "I... don't know."
Couldn't bring myself to tell her it was a bull's penis.
Best part? As I was ringing her up, she brought it up to her nose and sniffed it, going, "Pizzle... Hmm..."
I think I strained something holding back guffaws.