I had this exact thought once getting an award. I actually opened my acceptance speech with, "This is when I'm supposed to get up here and tell you how humbled I am by this award. But that's the exact opposite of how I feel. According to you, I'm awesome! In fact, I should probably apologize now to my co-workers for how much more difficult I'm going to be to work with after tonight."

EDIT: messed up some grammar... this mistake has humbled me.