Thanks to Matt over at No-Sword, I learned the kanji for くそ today – 糞. Thought it was so cool I had to blow that shit up:
Hmm…now that I look at it close up, it’s not so complicated. When it was tiny, I thought it looked like a complicated version of 釜. It’s just 米 with 異なる underneath it. The appropriate mnemonic is clearly, "That shit ain’t rice!"