Other things not to say to transgender people:

Transman/transwoman

These terms are frequently used by the most rabid of transphobes because they allow the ‘phobes to sound as if they are being respectful when in fact they are feeling pretty damned pleased with themselves at being able to dismiss trans folx as either not ‘real men’ or ‘real women’.

Instead use ‘trans man’ and ‘trans woman’ denoting that the person being referred to is indeed a man or a woman, and ‘trans’ is just one of any number of adjectives that describe what kind of man or woman they are.

Just sayin’