As with Mcpee this is when you go into McDonalds not to actually buy any food, but just to use the toilet. However, when confronted by the overzealous 5 star employee stating toilets are for customers only, you lie and say you're buying food after you've been.
Johnnie 5 stars: "Excuse me, toilets are for customers only!"
Desperate passer by: "I'll be right back for a Big Mac, but my back teeth are floating and you don't want me to piss on your floor now, do you?" The Mcpee with lies.