(A waitress friend of mine has a couple who regularly comes in and jokes a lot together. One day, the man comes in with a different woman. This occurs as she’s getting ready to give them their check.)

Waitress: “You come back soon!”

Male customer: “I will.”

Waitress: *joking* “Oh, and you better be careful or I’ll have to tell your wife you were here with another woman.”

Female customer: “I am his wife. Who has he been here with?”

Waitress: “…I’ll take care of your check now.”