Speed Nazi 

An overzelous cop with a radar gun. Can often found right at the edge of school or playground zones.

Better slow down, there's a speed nazi.

Speed Nazi by Canadamus_Prime September 26, 2005

nazi speed 

n. amphetamines.

"known as "Nazi speed" because of its creation by German scientists during World War II to increase the endurance of their soldiers."

nazi speed by jim June 24, 2003