Keroro, Restroom Survival / Keroro vs Giroro vs Tamama vs Dororo
Special toilet-centric episode! Chased by Natsumi, Keroro holes up in the bathroom and tries to survive with whatever is on hand. Later, Keroro and company are in town when they're struck by the need to relieve themselves all at the same time, but can't seem to find an available toilet. Source: crunchyroll
Aired 20/11/2010EP 341 - Keroro, Restroom Survival / Keroro vs Giroro vs Tamama vs Dororo
Sgt. Frog
Keroro is a frog-like alien sent from his home planet on a mission to conquer Earth. But when his cover is blown, his battalion abandons him and he ends up in the home of the Hinata family. There, he's forced to do household chores and sleep in a dark basement that was once supposedly a prison cell haunted by the ghost of an innocent girl. He even spends his free time assembling Gundam model kits. During his stay, Keroro meets up with subordinates who were also stranded during their failed invasion.
(Source: Anime News Network)