1. To make a fool of yourself by getting caught doing a deceptive or untruthful act (such as lip syncing) and blame it on external circumstances such as acid reflux disease, a drummers timing pressing a button, track performance order etc. To pull a genuine Ashlee Simpson one must "do a hoedown" (or some similar bizarre and out of place act) once caught.
n. The point that must be exceeded by exposure to crappy music to begin producing the given effect or result, or to elicit the response of, preferring to listen to the music of Ashlee Simpson.
I cannot listen to Green Day, Coldplay, or the Killers anymore. They have all breached my Ashlee Simpson Threshold.
a girl who has almost not talent at all. was once a major poser who wouldnt hold a note to save her life a few years ago. now she is a fake, plastic faced slut who still cant hold a note to save her life. also says shit about how she loves how her natural body is, then gets plastic surgery on it the next day. the only way the world even knows her is through the fact that her sister was famous for her actual talent. has a tendency to lip sync at concerts (to the hideous screeching she calls music), and then gets caught.
ugh! stop trying to act all punk...you looklike ashley simpson all over again!