They, their It's not really a good pronoun, though, as they are also used for plural third person, leaving the hearer to determine whether the statement refers to a single person or multiple people.  For example: "They let their dog poop on my lawn and I'm going to kick their butt".  Either of these could either be singular or plural, and without context we don't have any clues.  I would suggest something that is ridiculous, just to show how ridiculous arguments based on pronoun usages are.  How about "Hir" (Sounds like "here", but with a ridiculously held out "EEEEEE" in the middle, like a Swede saying it, Him/Her), "Hes" (rhymes with "yes", also ridiculously held out, Hers/His), and "shehe" (kind of sounds like "shithead", He/She). Now we have the completely gender neutral statement:  "Shehe let hes fucking dog poop on my lawn and I'm going to kick hir ass."