Happy Birthday to the knife wielder.
+1 on wondering what the cake is....I thought it looked like a rocket thruster on a space ship or something.
On a cakecutting note, I get an ice cream cake for my wife every year at the beginning of the shcool year, and we keep it in the deep freeze. I use her BM-E to cut it, because the normal knives don't do do well on the deep freeze cake unless I heat them up. Infi seems to handle icecream and cake just fine though...still shaving sharp after.
--BubbaThud