Geeked Yourself Out
Changing your demeanor from being an "Average Joe" to a "Bill Gates want-to-be". OR... Changing your looks into a glasses-wearing, high-waisted pants wearing, pocket-protector carrying nerdy, geek.
"David, you have really "Geeked Yourself Out" this year. You used to be so goth and so cool, now you are so nerdy...I didn't even recognize you!"