To pull an Ashlee Simpson:
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.
1. That dumb bitch just pulled an Ashlee Simpson!
Ashlee Simpson (to pull an)