Skunk Fu! S01 E26 The Art of Endurance

As endurance training, Panda has Skunk place an egg between his legs and hold it there – without breaking it – until Panda returns and says it's okay. Problem is, Panda is quietly kidnapped by the Ninja Monkeys. Skunk is determined to pass the test and hang onto the already rotten egg, which makes the rescue mission all the more difficult.