Someone you would thoroughly enjoy pushing down the stairs.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Toys that were metal but are now plastic and not nearly as cool.

Pulling off a god-like move in tetris

Adjective, describing someone as wiry and flexible. A skinny person. Someone likely to flip over.

A person who is generally worthless, but will bring a smile to your face if they get pushed down the stairs.

Adj: Slutty and kinky. Right Ke$ha!???

Adj: To be sexually whoreish, yet slightly awkward when being so