Not to stir up controversy (but do so a little bit), if I called one-piece a "nigger suit" what would think?
I contend the term "fag bag" is no different.
Well, I know gay people who call 'em fag bags (pretty funny actually) but I can see your point. "Fag" doesn't necessarily have the derogatory context that the "n" term does, especially from a white cracka' like myself. I'll run with "fruitsuit" from this point...
On a brighter note the onesie is always a good source of amusement on the mountain!
I bought my gf a pair of Section Bib pants and she was afraid she'd get made fun of also
but I let her know that the bib and the onesie are in two totally different categories!