倍增

倍 = 亻 + 咅 : Beelzebub (b) made seven times (倍) three poo-poos (咅) in the Eiffel Tower's bathroom (ei4) and challenges Rosa Luxemburg (亻) to tell him how many poo-poos there are. Rosa should take great care: every time she gives the wrong answer Beelzebub doubles (倍) the number of the poo-poos.

增 = 土 + 曾 : In front of the engine ((e)ng1) some fireflies (曾) are busy increasing (增) the height of the hill on which engine rests by piling up dirt (土) so that it counts as a mountain. Zorro (z) came to interview them but since they are so tiny they need to use an amplifier (增) so that Zorro can hear what they are saying.