If a person starts saying loads of bullshit, then that person has most likely gotten bullshitosis.
John: Naw. My dad is here. You have to go back.
Brasil: LIES! Hurry up and open the door.
John: Just knock on the door. Is the apartment #22.
Brasil: BS!! I know that it is 21. It seems that you have gotten bullshitosis. Damn, I told you to stay away from those shady hookers from that alley.