纳税

纳 = 内 + 纟 : Napoleon (n) took a tiny CT scan (内) of the silk worm (纟) in the ashram's bathroom (a4). The silkworm is relieved when it receives (纳) the scan and realizes that everything is ok.

税 = 兑 + 禾 : Sheldon Shrimp opened an exchange booth in the Eiffel Tower's bathroom, and shortly thereafter a tax collector visits to collect the tax. Sheldon's business was rather mediocre though, so he can only offer a bowl of cereals as payment.