In sports, specifically the playoffs, a Cinderella is a team that does better than expected near the beginning and then quickly fades.

The fist used to express deep or extreme emotion during a song, in which the singer extends a fisted hand and brings it back in toward their body with intensity of emotion.

Verb. Etymology: coming from the modern car tuning scene.
a phrase that means to modify a vehicle with as many types of aftermarket parts, performance or visual-wise, as are supported by that certain vehicle.

Injuring oneself by using a sharp object to try to open hard-to-open plastic packaging like the kind they sell cheap consumer electronics or household items in. Growing phenomenon described in the Pittsburgh Gazette and popularized by Stephen Colbert.

When you've maxed out all your credit cards.

Describe a vehicle with wheels that are less than desirable: too small, ugly, mismatched, trashy, horribly colored, etc.

A person that spends a keen amount of attention and energy on knowing the ingredients of food, the proper preparation of food, and finds great enjoyment in top-notch ingredients and exemplary preparation.
A foodie is not necessarily a food snob, only enjoying delicacies and/or food items difficult to obtain and/or expensive foods; though, that is a variety of foodie.