a girl who is invited backstage at shows in exchange for "favors."(wink wink) a softer way of saying groupie.
i see a lot of potential backstage betty's here tonight.
by Samigirl B April 09, 2005
A woman(hopefully) usually invited backstage by members of a band who mainly are just looking to sleep with her.
Hey Billy it's been a pretty lonely tour so far. How bout we round up some backstage bettys?
by Bsmithh June 29, 2006