Transvistite

1) someone who was giving XP users shit because they had vista then switched back to XP because of crashes
2)someone who switches loyalty between XP and Vista more then twice

1) guy #1: OMG john over there had vista like 2 weeks ago, why is he on XP?
guy #2: thats simple john is a Transvistite.
2) (guy #1) month 1: OMG vista is teh bomb!
month 2: vista sucks, XP is waaay better
month three: vista beats XP any day
(guy #2) stop being such a transvistite!