In episode 1 of season 5 (Riot FOMO) of Orange is the New Black, there is a scene where Sophia see Humphrey's groin and says in kind of disgust:
Looks like someone forgot to do laundry
(Link to full transcript of the episode for context here).
Now I didn't get what she meant by this. I didn't notice any dirty clothing there. So is this some kind of internal humor/pun of Orange is the New Black which I've missed?