An acronym for Bam Said The Lady. A phrase made popular by Canadian actor Nathan Fillion (of such cult hits as Firefly, Serenity, and currently Castle), used as an expression of enthusiasm and/or finality.
A reminder to Negative Nancys out there- keep it positive. It's insecure to think you have to be mean to be funny. Mean = blocked. BSTL.
After hearing all your secerts, I feel we're all a little closer. Mine? The Incredibles was the best movie ever made. Ever. Made. BSTL.