8 Mile

Verb - To say someone's best future counter argument against you prior to them saying it to leave them with nothing to say. This term is used in business/sales/finance/negotiating. In the last rap battle scene of the movie 8 Mile, B Rabbit (Eminem) states things like "yeah, my mom lives in a trailer park, and yeah I am white trash." His opponent was speechless because Eminem stole all of his counter arguments.