Is it normal to eat dirty sandwiches?

I found a sandwich on the goidewalk in a ginnel and ate it. It was quite tasty, even if it was a bit dirty.

I have never seen anything as delicious as cheese with a hint of white crust, green ham and a sauce that tasted like alcohol but was odourless.

Afterwards, however, I felt a bit strange. I saw little purple men undressing, dancing around me and laughing at me.