Birthday cake

The Birthday Inferno Birthday Cake is an object in The Sims 3 and can be bought at the supermarket, and can be found in the "Parties" Category of "Sort by Function" in Buy Mode. It is used to age up a Sim by one age category. It can be used on any Sim on the lot, not just Sims in the household. However, it can only be used once per Sim. Occasionally, it may catch fire.