A Potomac-area variant similar to a Cleveland Steamer or a Boston Pancake, but rather than dumping on the girl's tits, one should aim for the genitalia, and ideally get the feces caught in the girl's pubes. So-called because if one were a crab louse watching this unfold from said girl's pubes, this would resemble a huge brown comet streaking across the sky shooting out of the "moon" and crashing into the earth.
After the Redskins lost to the Cowboys, I realizedthe only thing that could cheer me up was sending a DC comet streaking across my girlfriend's vagina.
Comet nuclei are loose collections of ice, dust and small rocky particles, and leave a trail of debris behind them. Comet droppings are the dirty piles of snow and ice compacted by plows that starts off white but eventually becomes grungier as it melts down to reveal dirty, gravel, cigerette butts, and other debris when the tempurature rises