I had been doing that too, but for the 2010 Census, my wife knew I was going to check off all the boxes, so she snatched the Census form out of the mailbox, filled it out and sent it back before I found out about it. (I think she was worried that I could get in some sort of trouble for teasing the Feds.)
(Thanks to 23andme, I can now prove that I'm a blond, blue-eyed Indian, just like Elizabeth Warren!)
Thanks to 23andme you can prove your ancestry. Has granny ever proved her ancestry? So maybe you are different then her?