You know, statements like this are amazingly simple minded and un-aware of the diversity in the world.
Are you telling me you wouldn't be confused if you saw Evelyn Rios next you washing her hands in the Men's bathroom?
Or your girlfriend/wife/female friend be upset about seeing Michael Hughes coming out of a stall in the woman's bathroom?
http://www.addictinginfo.org/wp-content/uploads/2015/04/B0042.jpg
You want elaboration on this?
https://twitter.com/hashtag/wejustneedtopee?src=hash
Also, lets talk science and the 3 different categories here. 1) self identification 2) biological classification 3) social-ital expectations.
#1 has been shown to be affected by biological processes. In fact recently there was a test in mice which modified the development of one area in the brain which caused biologically male mice to have some feminine behaviors, but not all behaviors. Other areas affected had other changes as well.
#2. What biologically classifies each gender? Someone already brought up the XXX, XYY, etc etc. Are we going to claim only those with bait and tackle? Nice to know Doctors have that choice in their hand when some intersexted are born. Or because it's not quite right, modified to fall much closer into the mean.
#3. This is worst of all... Blue is for boys and pink is for girls right? Wrong.
http://www.smithsonianmag.com/arts-culture/when-did-girls-start-wearing-pink-1370097/
as the quickest link. Look to the asian rim for ... forgot the term. But it's a frigging fluid thing that happens over generations. We are literally just to short sighted to see in easily within our own timeline.