狗屁

狗 = 句 + 犭 : This dog I will represent by a Great Dane (German: "Dogge", very similar to "dog").

Guy Fawkes (g) and the Grammar Nazi (句) are being walked by their dogs, a Dachshund (犭) and a Great Dane (狗), in the outhouse (ou3). Guy Fawkes and the Grammar Nazi are very interested in each other and spend a lot of time sniffing each other's butts.

屁 = 尸 + 比 : Pocahontas (pi) is trying on her new bikini (比) in the space station's bathroom (Ø4) but she can't stop farting (屁). At least she thinks she is, in reality an invisible ghost (尸) is farting all the time to make her think so and prank her.