Some of us get to eat a beautifully frosted, delicious, two-tiered cake for our birthday. Others get the kind of cake we're almost afraid to cut into. We found a few birthday cakes too amazing to forget, whether it's because they're spectacularly cool or spectacularly weird. Here are 10 wacky, insane, and incredible birthday cakes we just had to share. Would you dare sink a knife into one of these masterpieces?