You might also see this referred to in various guides as part of a bundled modification that offers different "flavors" of the Woohoo interaction—typically "Risky" (increased pregnancy chance), "Wicked" (adult-teen content), and "Child" (adult-child content).
The Sims 4 Child Woohoo Mod is a popular choice for players who want to add more mature themes or creative freedom to their gameplay. While it does come with some potential drawbacks, the mod can be a useful tool for players who want to push the boundaries of what's possible in the game. Sims 4 Child Woohoo Mod