*Shrug*. No, but I'd call my telephone a 'phone.
Like docetboy says, it's generally down to the word 'frat' being associated with an old fashioned predominantly 'Animal House' image which misleadingly suggests all fraternity members do is have keg parties, hazing, toga parties and slobber over girls.
I'd guess that's why your GLO gets offended when the term is used, nauSIGGY. All the hard work on academics, philanthropy, leadership training, safe events etc., are all impliedly brushed aside by the 'drink-till-you-get-alcohol-poisoning' "fratboy" image! Most members on GC know what is *actually* involved in GLOs; a lot of people only ever see the media image (haze/drink/haze/drink) and the less we associate our own GLOs to those images (via use of terms which suggest all these things to people) the better for us.