As a UAS QFI, I was chatting with the new students one training night. I happened to mention that I'd been a student on the very same UAS back in the early 1970s - at London Queen Mary College.
"Really?", said one rather delightful but somewhat naive young lady, "My mother was at QMC then. Perhaps you knew her?"
This was too good to miss. "Hmm, perhaps I did, err....'know' her.
How old did you say you were?"....
The penny dropped as she did some mental arithmetic. "Sir? I'm not sure I quite liked that......
"
And no, I didn't, before anyone comments. But the student and I are still good platonic friends some 20+ years later!