Top definition
A slut. One who rides the junk religiously.
phrase coined on episode 96 of The Mediocre Show with Eric and Taylor.

Also can be shortened to "J.R."
1.
Guy: Hey, junk rider!
J.R.: You want some?
Guy: Hell no, you've been on way too many cocks.

by someonewithnoone August 20, 2007
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