I'm a happy atheist!
The truth (science) has set me free!
"This little light of mine....I'm gonna let it shine...."
I don't go around blabbing about my atheism, but I'm certainly not ashamed of it either. I'm a freindly outgoing type....so if a conversation needs the info, I easily say "I'm an atheist!"
Sometimes I might add that I was "born and raised an atheist"
that usually leaves the offended fairly speechless.