Did you notice..

At the end of 'Wannabe In The Weeds' Booth is shot and repeativly Brenna yells 'Come on Booth'. When Booth blacks out she yells it one more time (aggressivly).
At the end of the episode (involving Jungle Jim, Car Sales,booths new car, name of episode forgotten) Brennan annoys Booth into letting her drive his car, she races out of the parking spot and Booth refuses to get back into the car with her, he hops into a taxi and Brennan yells 'Come on Booth', its sounds exactly the same as above.