McDonalds, Dinner of Champions

When I'm exhausted and hungry after work I usually grab some McDonalds and scarf it down in my car or on the walk to the train station. I'm always afraid that I'll bump into someone I know with half of a Big Mac hanging out of my mouth and ketchup smeared all over my cheek. If you ever see me on the street doing this please just pretend like you don't know me. Thanks.