When you are focused on doing something and all of a sudden you are distracted. When you are having a conversation and all of a sudden you are distracted or have a random thought.
Having a conversation with someone and noticing their "shiny" ring or jewelry, in which your focus suddenly becomes about their jewelry.
You are having a conversation with someone and all of a sudden "shiny rock" you change the subject to something completely random or different.

You are focused on doing something and all of a sudden "shiny rock" you randomly do something completely off track of that focus.
by Candygirlie August 25, 2013
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Someone that is really cute, but has a shit personality

(credits to Annie Marshall for this)
Wow he's super hot but he's just a shiny rock
by Kyleechrist April 25, 2016
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