齾

献 = 南 + 犬 : The Saint Bernard dog (犬) is out of blood to bring to severe emergency spots, so Marie Curie (xi) volunteered to donate (献) blood in the anthill's bathroom (an4). To make her feel comfortable, the Saint Bernard dog set up a palm (南) from the south pacific.

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.