呕吐物

呕 = 区 + 口 : Albert Einstein meets an alien from Area 51 in the outhouse. He wants to be nice and gives him mandarins, but since mandarins aren't alien food, he has to vomit.

吐 = 口 + 土 : Tommy Turtle is spitting mandarins at a dusty, muddy earth from inside the space station.

吐 = 口 + 土 : Tommy Turtle (tu) ate too many mandarins (口) in the space station. He can't help but vomit (吐) until he produced a muddy pile of mandarins (口) in the bathroom (Ø4).

物 = 勿 + 牛 : Willy Walrus (w) wants to become a physicist (物) and does research about dark matter (物) in the space station's bathroom (Ø4). His motivation is to become a super villain and rule the world. Just as he is about to have a breakthrough, a huge black ox (牛) flying with the help of bat wings (勿) hits Willy with an oxerang and takes away the dark matter, saving the world.