Ditmarks the Monkey (S04E05)

Frank and Casper have chosen to sponsor Ditmark, a monkey at the zoo. However, Casper insists on demanding perks that go beyond typical sponsorship. One evening, things spiral out of control, leading them to the zoo accompanied by two girls. This escapade lands Frank and Casper in hot water, involving a locked monkey enclosure, a pair of girls' panties, and an irate accountant who is not pleased with the chaos.