Not antimustachian, but it happened at work today and it was funny!
I work for a large financial services company that allows you to nickname your personal accounts online, and I have nicknames for each acct.
I had a large check I needed to deposit today, and I was pleased to discover there was an employee services branch right on campus. I made an appointment with the employee advisor and went to deposit my check earlier today. The advisor asked me which account to deposit it to, and I said, the account with $XXX amount in it. He looks at me with a smirk on his face, and asks, the one called “Hubby's name and your name FU fund?” I burst out laughing and told him - I didn’t know you could see my nicknames! He laughed and said, we’ll just assume that FU means follow up. :)