The general perceptive abilities upon identifying who is a male or a female is relatively easy for the given majority of TypeC. It is true that most tend to adhere to distorting their particular projections upon other individuals with the basis of gender in play and with such, flirting/playful attitude may not be an open possibility upon the many heterosexual individuals towards their equal genders. Perhaps mostly apparent in males. To play the gender confusion game may not be useful for each individual if they wish to gain certain relationship types with such.
Male 1 goes and flirts with male 2 who portrays as female.
Male 2 may or may not go with it.
If male 2 does not go with it and mentions he is male male 1 may suffer mild self-humiliation.
If male 2 goes with it then male 1 finds out male 2 is a male long afterwards a larger humiliating confusion occurs.
One scenario, many many other possible ones that may be far more complicated. I wouldn't believe it's worth the effort. Plus, most people would really like to know the gender you are in real life.