Metro rash
Stains on clothing obtained by using public transportation or walking in public.
Bob: Jane, did you realize you had a huge stain on your sleeve?
Jane: No! This jacket is brand new. Ahh! It must be from me leaning on the Metro this morning.
Bob: Looks like a bad case of metro rash.
Jane: No! This jacket is brand new. Ahh! It must be from me leaning on the Metro this morning.
Bob: Looks like a bad case of metro rash.