Tube ugh. Last night while travelling home, the girlwoman opposite me took out some dental floss then flossed her teeth on a packed tube. Somewhere around Oxford Circus she chucked the used floss on the floor then continued to do her full make-up, before getting off. The man who sat in her now empty seat promptly trod on her dental floss.

Which is precisely the reason I take my shoes off the second I get home.