Recycle is a transfer only move for Snorlax, so the only way to get a Snorlax in your Pokémon X or Y game is if you teach a Snorlax Recycle via the Move Tutor in Pokémon Black or White 2 in Nacrene City and then transfer it over using Pokémon Bank to Pokémon X and Y. It's either that or you magically acquire one through trade.
Note: In exchange for the Move Tutor teaching Snorlax Recycle in Pokémon Black and White 2 you need to hand over 10 Green Shards.
You can not transfer a Snorlax on Pokémon X or Y to a Generation V Game.
Hope I helped :)