A mustache with food particles stuck to it that the person wearing it is unaware of. This can also be sported on the top lip of a person who has no facial hair. An Egg McMustache (a term built around the Egg McMuffin) is also a fun thing to order at McDonald's to go with a two-piece Chicken McNutsack which is a term built around the famous Chicken McNuggets.
"These people didn't hear my order correctly. I ordered an Egg McMustache and they gave me an Egg McMuffin instead. They told me that eggs don't even have mustaches. No, but mustaches have eggs. Where do you think baby mustaches come from? I want a refund!"
by ANOTHERDEADROMEO March 6, 2023