Let's Nupu Nupu

This show reminds me a lot of Colorful, because of the randomness of the plot and the ecchiness ofthe humor. Also, it aired around the same time as Colorful. Makes me wanna go back and rewatch Colorful again. But Nupu Nupu is more WTF than Colorful . so i'd say Nupu Nupu is funnier. 

Both have 3-4 main characters where something weird always happens to them, perhaps a little too weird. Also they both have similar slapstick humour, Nupu Nupu being even more perverted 

Both are short episodical anime full of toilet humor and don't make too much sense, also, both of them are trashy and fall under so-bad-it's-good category. 

Similar perverted funny characters. And both are comedy shows too. 

Both are crazy, silly, funny, short, over perverted and to be frank really stupid. Stupid in a very humorous way though, when you are in the right mood. Both of them also have low production values and have about the same layout for all the episodes with little variation. Either you loveor hate them.