Speedlin

v. The act of walking a soccer ball into the opposing goal or ones own goal as demonstrated by the great David Speedlin in a Central Catholic soccer game, thus making one's opponents or self, respectively, look like a jackass.

n. An instance in which the proceeding occurs.

Speedline is when you make two lines of coke (or whatever drug you're snorting) and snort them both one after another, some people switch nostrils for each line.