Slumber Party Catscratch : Season 1 Episode 10

When the cats run out of root beer-their favorite beverage, they are shocked to find that the store is sold out of it as well. Mr. Blik, Gordon and Waffle discover that Human Kimberly has a huge stash of root beer on hand for her very first slumber party, so the brothers decide to dress up as girls and crash the festivities, much to Kimberly's horror.