Every so often, when my husband's hair is at a certain length that makes him look like a mad scientist, he gets it cut. He refuses to let me cut it, despite repeated offers -- perhaps because I have no skills or experience with cutting hair -- so he seeks the services of a professional hair-cutter. He typically just stops in at a cheap hair-cutting place near campus.
Recently, he had this conversation with the person cutting his hair:
HC (hair-cutter): Do you want me to trim your eyebrows as well?
Spouse: No.
HC: It will take 10 years off! You'd be surprised!
Spouse: No, I like my eyebrows old and scary.
HC: Oh, you must be a professor.