昨儿个

昨 = 乍 + 日 : Yesterday (昨) Zapatista Zebra (zu) cut the sun's (日) hair in the observatory's kitchen (o2). They were both singing "yesterday" (昨) as Zapatista Zebra was turning the sun's crazy hair into an awesome Mohawk (乍) cut.

儿 = 丿 + 乚 : Mnemonic symbol: "son" (儿) sounds similar to "Sun" like in "Sun Wu Kong", so it's gonna be represented by the monkey king. Albert Einstein (Ø-) and Sun Wu Kong (儿) are fighting in the space station's kitchen (-Ø2). Their weapons: Albert Einstein has a shovel (乚), and Sun Wu Kong has a banana (丿).

个 = 丨 + 人 : Neanderthal Man (人) needs to use the elevator's bathroom (e4) but it's occupied by Guy Fawkes (g), and there's only space for one individual (个). Impatiently Neanderthal Man knocks on the door using his dinosaur bone (丨).