The life of the party, takes part in scandalous and racy activities, often mistaken for out of control and misbehaved, enjoys making rash decisions, handles rumors and social discrimination better than anyone, many are jealous of her vivacious past and are envious of her go getter mentality, she doesn't seek attention but always recieves it, a queen of rebellion and a charming bitch, she'll rule the world.
Brittney has been considered to be a buttercup ever since she got really drunk and pulled the neighboring fraternity house fire alarm as a prank.
The act of farting into one's "cupped" hand, then ushering the captured fart into an unsuspecting victims face, thus causing him to inhale your butt fumes. Optimal conditions occur when victims mouth is open.
John was doing his math homework when suddenly he was inhaling fart from the butter cup Tom had just unleashed on him.
Verb: A buttercup is a unique way in having someone else take a whiff, or in some cases, even a taste of a fart. All that needs to be done is when you feel it comming on, you cup your hand over the exit, catch the fart, and cup it over someone's nose and mouth. In some cases, "the thrower" can smell their own to make sure that it is a "good" one.