Back at the Barnyard (2007)

Season 1: Episode 49

After the animals break the farmer's classic video game system, they need to make some quick cash to replace it. Seeing an ad to babysit, they dress up as British nannies and show up at the address on the ad. Only when Mrs. Beady answers the door do they realize they're babysitting Snotty Boy, but Snotty Boy wreaks havoc on them and the animals have to get the little terror fed, bathed and into bed before the Beadys get home and earn the money for babysitting.