Happy birthday message for atheists

I don't mean to offend anyone, particularly because some of my dearest friends are atheists, but this e-card from www.someecards.com made me laugh.

I suppose atheists could turn this around by replacing "atheism" with "Christianity" or any other religion out there. Nevertheless, what a funny little birthday message. I wonder if I could give this e-card to someone I know for their birthday and not have them sever ties with me.

G.