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.
A stick or similar object used primarily for hitting things. A hitty stick can be anything from a simple tree branch, to the mighty nail-bat and is a weapon accessible to anyone with arms.
Some fucking guy: How'd you get rid of that guy who broke into your house the other day?
Some other fucking guy: I beat him to death with my hitty stick.
Some fucking guy: Right on.