Unintentional spousal humor part II

Him: "Why is it that people say 'batshit' for crazy and not 'guano'?  They're the same thing." (Referring  here to Wonkette.com posts.)

Me: "Plosives."

Him: "What? Explosives?"

Me: "No. Words with syllabic bite. You know, like 'slut'.  Hammer syllables and hard stops are more effective when used in certain ways. Plus, if you're inwardly eight, like me, swearing gives you a frisson of glee. But a better question might be why people say 'batshit' and not 'catshit'."

Him:  *pause*  "I guess. Hey, do we have a special knife for cutting up eggplant?"

Me: "Nope."

Him: "Well, can you do it? Because the skin feels like skin and it''s like I'm doing an autopsy over here."

Me: "You're making dinner and you bring up bat crap, but the skin on an eggplant grosses you out?"

Him: "I know, right?"