Hahaha.... oh my.

From what I can tell though, spirit is a very "special case" type airline... heavy on the vacation market and cheapie fares, famous for CCing someone into an abusive email etc.? I think airlines like that can probably get away with this sort of thing.

To me it makes a little sense, I have seen how large the bags are on US aircraft and it astounds me that people seem to think they will fit!

That being said, I sit here in my ivory tower where AA etc. don't charge us nonrevs for our bags so who am I to judge