Tooth
Teeth
Stop! That box of rice is actually full of teeth! I know it says "rice" on the cover, but I promise you those are all teeth and if you bite into them you'll break a tooth of your own.
し
は
None
Why do I have a rice box full of teeth? Ha (は)! Wouldn't you like to know. Ha! I definitely have an answer that isn't weird or creepy. Ha... ha ha...