Snorlax is a lazy dude. Very lazy. He shows up in pretty much ALL THE GAMES!!! He likes to eat. Oran berries are his favorite. He says their good. This is how they found that out:
Its christmas!
Machamp: Hey snorlax! I got you something!!!!
Snorlax: Food?
Machamp: Since you so lazy, i'll open it *Opens* its a pecha berry!
Snorlax: Can i eat it?
Machamp: Yes *Stuffs into his mouth.*
Snorlax: *Spits out* GROSS!!!!!
Machamp: Well i also got you an oran berry! *Stuffs into mouth again.*
Snorlax: ...... mmmm.... good!