Papa to Odorou

Imagine two irresponsible siblings (Fuko and Yoshiharu) living under the care of an equally or more irresponsible father (Amachi). Then add some bizarre stuff, like cobras, bad jokes, adult videos, seductive grannies, farting, stupid remarks and insults, terribly foul language, and a nonsensical plethora of strange happenings...
(Source: Anime News Network)