蹭
=
足
+
曾
:
The firefly (曾) is too lazy to fly on its own. To get to the other side of the engine's bathroom ((e)ng4) it is freeloading (蹭) by hanging on to a football (足) thrown by the King of Chu (c).
课
=
果
+
讠
:
Karl Marx (k) notices an advertising column (讠) in the elevator's bathroom (e4). He decides to teach these capitalists a lesson (课) and throws grapes (果) at the ads, messing them all up. That'll teach them!