It is a strawberry-flavored birthday cake with pink icing and has a picture of a squirrel wearing a red scarf and snowboarding on it. It contains walnuts and has a cyan candle.
Role in episode
Sandy celebrates her birthday at Jellyfish Fields with her friends, SpongeBob, Patrick, Squidward, Mr. Krabs, Mrs. Puff, Pearl, and Larry. The cake first appears when SpongeBob places the plate on the table and everyone sings "Happy Birthday" to Sandy. Afterwards, just as everyone is about to dig in, Patrick pounds on the table to transport the cake to his mouth. Fortunately, SpongeBob has a spare cake and re-serves it to everyone.
The cake causes Squidward's face to swell up since it contains walnuts, which is one of his allergies.
Patrick tries to ruin the experience once again, but Sandy prevents this by karate chopping it into halves onto everyone's plates.
They are finally able to eat the cake and proceed to do so until the uprise of Neptune's moon interrupts them.