Calling the front seat of your friends car (shotty) and no one can try to challenge you on it (no chal.) You can only use this rule when you can actually see the car.
passenger riding shotgun (the front seat) receives oral sex from the driver while still driving. extremely dangerous but extremely pleasurable. recommended on freeways that do not have a lot of curves.
A phrase used, either ironically or seriously, to reserve the front passenger (a.k.a. shotgun) seat of a vehicle for yourself, under the pretense that you deserve to ride shotgun because of your good looks. Girls are more likely to say this than guys, but either sex can use it.
Sean: "Shotgun!"
Erin: "Nope, hotty gets the shotty!"
Sean: "WTF? Whatever, but I pick what we listen to."