Finding pleasure in placing something on a shelf, and deliberately not using it while being well aware of its existence and location.
EX1:
Friend- "wow, dude thats the Japanese import of FF7, but you don't read Japanese!"
Dude- "I don't need to read Japanese. I'm gonna shelf-ride the SHIT out of this thing!"
EX2:
Son- "My dad's got some stuff he's been shelf riding since the 60's"
EX3:
Girl - "I gave you a gift, and you never use it!."
Guy - "What do you mean?. I shelf-ride it every day!."