A speed is a unit of speed often used on speed limit signs.
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In "O R ANG _ S P E E D S", Orang is seen exceeding the speed limit of 5 speeds, and Meme Man (acting as a cop) has to stonp him. Later, in "S P E d d", Orang is seen exceeding the speed limit of 8 speeds by going 9 speeds; he rotates the 8 on the speed limit sign to turn it into "INFINITE SPEEDS."