勿
=
丿
+
勹
:
Mnemonic symbol from the shape of the character: bat wings. The 丿 strokes look like the fingers of a single bat wing.
The elephant (勹) wants to eat a banana (丿) in the space station's bathroom (Ø4), but Willy Walrus (w) suddenly flies by (using bat wings (勿)), snatches the banana away and shouts "do not!" (勿)
Never forget national humiliation, refers to Mukden railway incident of 18th September 1931 九一八事變|九一八事变 and subsequent Japanese annexation of Manchuria