If you're new to the world of pop-pop boats, you might be wondering how to prime one. Pop-pop boats are a type of toy boat that is powered by heat. The way they work is by using a candle to heat up a small chamber of air inside the boat. This chamber of hot air then expands and pushes against the water, propelling the boat forward.
To prime a pop-pop boat, you'll need to first find a flat surface on which to place it. Once you've found a good spot, light your candle and hold it underneath the hull of the boat. You'll want to keep the flame close to, but not touching, the bottom of the hull. As the candle heats up the air inside the hull, you'll see bubbles start to form. Keep heating until there's a steady stream of bubbles coming from under the hull - this means that your pop-pop boat is primed and ready to go!