"Sell me this pen"
"So you're a dermatologist? Have a look at this mole I found conveniently between my butt cheeks during this lovely wedding ceremony."
"Oh you're a mechanical engineer, can you fix my car?"
""Oh, you're a writer? Can you help with this very important legal letter?"
And a non-job bonus: "you're married to my programmer son, can you help me with my phone?" My husband gets the "you work in IT, my printer isn't working" questions from his mum. She thinks he does tech support. He programs systems for universities, government departments, etc."
"Oh, you’re a therapist? tells me about their family member who really needs to see a therapist"
""Oh, you're a truck driver? Can you come tell me what's wrong with my car?"
Umm, ma'am, I just drive the damn things... You want the shop guys for that."
"Oh , you are a comedian? Tell me a joke."
"Oh you're a nurse, can you have a look at my ingrowing toenail / tell me why I have a rash down below"
"Oh, you're an electrical engineer? Can you wire my garage?"
"Oh, you studied linguistics? What does this word mean?"