This is why I have mad skills

Melissa: Cait, on TOS, who sang “Take Me Home, Kathleen” over the intercom system?
Me: …
Melissa: Cait! You should KNOW this!
Me: I’m thinking! It sounds like a trick question, because the character that always sang was Lt. Uhura, but this is an Irish song so it’s gotta be from an ep where people go crazy, so…Kevin Riley?
Melissa: YES! I KNEW YOU’D KNOW!
Oh yeah, that’s why they pay me the big—well, it’s why they pay me, anyhow.