敢
=
乛
+
攵
+
耳
:
Mnemonic symbol: 石敢当, stone tablet erected to ward off evil spirits.
Guy Fawkes erected a stone tablet to ward off evil spirits inside of the anthill, but as he was drinking at the bar he noticed how the stone tablet suddenly started moving all on its own and tried to cut off Guy's ear with a sickle. Consequently, Guy Fawkes takes a sledgehammer and destroys the stone tablet to be safe; he wouldn't dare to have another drink setting next to this weird tablet.
斗
=
⺀
+
十
:
Mnemonic symbol: a 斗牛士 (dou4 niu2 shi4) is a matador, who will represent 斗 when used as component.
The matador (斗) and Don Quixote (d) are fighting (斗) in the outhouse's bathroom (ou4) about who may use the bathroom next. The matador yields a holy cross (十) as a weapon, while Don Quixote (d) wisely chose a blossom (⺀) to cushion the crosses' blows.