(Well now it's an Amoongus but still)

Game: Y
Date: 1/1/15 (I'll have to double check that)
Method used: none

I was playing at night in Y and I was at route 15 when I find this little fellow. I honestly didn't remember much about my reaction, only that it was at night. But it had to have been excitement, because that was my first non-hacked, non-giveaway shiny.