I find the terms 'drab', and 'en drab' inaccurate and demeaning. There is nothing wrong with appearing as male.
Would we call our brothers on the Female to male dressers side of the street "drab"?
When I am in male mode I dress well with good hygene. I do not appear "drab". Could we use MM (male mode) and FM (female mode) instead?
FYI: From The Concise Oxford English Dictionary (1973)
drab (1) slattern; prostitute, (plus two other nasty terms quite rightly not allowed here).
drab(2) dull light brown colour; dull, monotonous
I am never any of these in male mode.
While I get the acronym, I still don't like it.
Some of you have offered the term "Bob Mode" I have no trouble insulting Bobs.