[1] In the episode, Brian works for a real estate agency after his teeth got broken by Peter, which leads him into trouble with Quagmire.
Brian trails behind the car until Peter takes a sharp turn, causing him to let go of the rope toy by sending him flying into a fire hydrant, losing all his teeth and fracturing his nose severely in the process.
Brian becomes miserable without his teeth and Lois refuses to spend money at the dentist to get him a new set since the procedure would be expensive and he is a mammal.
When the actual agent shows up, he gives Brian a job offer to join the agency called Quahog Realty.
Brian confesses that Quagmire may be his only friend for being the only person in Quahog to call him out on his wrongs, but it is revealed to only be a ruse to outlast the 72 hours.
Lois comments that Brian's new teeth make him look similar to Adam Carolla, who is known for voicing Death on the show.