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8.
Someone who is on a "lesser form of speed".
Yo dude, did you see what Holly gave Chris at the cast party? He is the Speed Racer.
by judgingjesus February 13, 2011
 
9.
a very very very very fat man
"Look at that SpeedRacer he must wieght 500 pounds."
by Ben September 26, 2004
 
10.
a male who suffers from premature ejaculation, or simply ejaculates too quickly for the female's liking.
Rick's not a very good lover; he was such a speed racer, we began and finished during a commercial break.
by boobookittyfuck@aol.com December 19, 2006