买卖

买 = ㇖ + 头 : Mahatma Gandhi visits the airplane. He sees a neat skull and a nice sickle, and he asks for the price, because he wants to buy them both.

卖 = 十 + ㇖ + 头 : Mahatma Gandhi (m) wants to get rid of his worldly possessions and sets up a flea market in the airplane's bathroom (ai4). He displays a cross (十), a sickle (㇖) and a skull (头) which he wants to sell (卖), so he attached price tags to all of them.