One who has sex and leaves immediately after, commonly known as a one-night stand, also a "hit and run" as an innuendo
"There are many species of sexual animals in this bar tonight. First there's the wall flower, then the emo-kid, followed by 'that guy' who thinks he can dance. Then there's the all night hammerdasher, watch closely as he stalks his next drunk target."
by JKrieg March 08, 2008