Top definition
When the passengers of a car misjudge the speed of the vehicle because they are viewing the analog speedometer at an angle. When not viewed straight on, the needle appears to indicate higher or lower speeds than the vehicle is actually travelling.
Jen: Slow down or the cops are going to arrest you.
Bob: I'm going the speed limit...
Jen: It looks like you're going 5 over from the passenger seat.
Bob: That's the spedical illusion messing with you.
by December 21, 2007
Get the mug
Get a Spedical Illusion mug for your mate Trump.