I think he means that women's pubic hair is usually an inverted triangle, but men's is more of a diamond shape - often combining with belly hair.
Google found this:
http://www.transgendercare.com/m ... m/tmf_program_6.asp
It says that with hormonal therapy,
"As example, arm and leg hair as well as hair on the abdomen, chest, and shoulders will greatly lessen and in some instances disappear completely. Hair growth in specific regions including that around the areola, armpits and pubic area will not lessen to the same extent."
So yes she could be transgender. Either that or she did a french wax - poorly...