Original description from derpi:  
Commish for AsherTye who wanted a nice pic featuring some familiar characters from the MLP franchise…this time Spike and pretty much a pony of my choice…so of course I choice a pony I’ve never drawn before: Rarity.
 
The scenario is that Spike was at the beach, and failed to notice that he acquired some friends which stuck to his armor tough hide…that being sea urchins. I thought it would be funny to have MOST of them stuck…to his butt. ^^ AND since there is a new movie out featuring the Mane Six, the franchise is STILL not going anywhere anytime soon…thanks Hasbro!
 
Hope you all like it, yet another one down, and still many more to go…it takes time guys!