齱

取 = 又 + 耳 : Mnemonic symbol when used as component in other characters: a bloody ear.

When Mike Tyson was fighting against Evander Holyfield, he did not only beat Evander's ear (耳) with his boxing glove (又). Imagine this fight in the space station (Ø3) with cupid (qu) as referee fetching (取) a bloody ear flying through the space station.

齿 = 止 + 凵 + 人 : Charlie Chaplin (ch) has an aching tooth (齿), and Neanderthal Man (人) is about to help him take it out using an electrical barrier (止) in the space station (Ø3). They attached the barrier to the tooth and as Neanderthal Man will plug it into the receptacle (凵), the barrier will pull out the tooth.