驗血

验 = 佥 + 马 : Maud Younger (y) took a pregnancy test (验) In anthill's bathroom (an4) and she's pregnant indeed, she just doesn't know if the father is 傅佥 (佥) or the unicorn (马). She called both to come over and plans to do a test series (验) to see who would be the better father.

血 = 丶 + 皿 : Mnemonic symbol: blood transfusion.

Xu Xian hurt himself and needs to get a blood transfusion in the elevator's bathroom. He found a petal leaf as donor, which is bleeding droplets into a bowl; Xu Xian gets the blood from the bowl as infusion using some tubes.