Dirty words 'litter' his vocabulary. [=his vocabulary includes many dirty words; he says a lot of dirty words]
('chiefly US') a 'litter box' = ('Brit') a 'litter tray' [=a container holding litter for a cat]
Of all the cars on the market, this one is clearly 'the pick of the litter'. [=the best one]
(..) No, Donkey! I need you to cry! Don't go projecting on me. I know you're feeling bad, but you got to... You little, hairy, litter-licking sack of... What? Is it on? Is it on? This is Fairy Godmother. I'm either away from my desk or with a client. But if you come by the office, we'll be (..)2004 Shrek 2
(..) I was doing it only for my family. My mother, she is sick. And my father lives off the garbage! The King offered me much in gold and I have a litter of brothers... Whoa, whoa, whoa! Fiona's father paid you to do this? The rich King? S'. Well, so much for Dad's royal blessing. (..)2004 Shrek 2