You can see a demonstration of the balloon technique at the start of this video:
If you get the technique right, you just got two hits for the price of one. You can also pass the filled balloon to a newbie who isn’t ready to rip the bong themselves yet. To see if this technique really works try filling the balloon with a fat dab hit and passing it to a sober friend and see if they feel it. Save money or help a friend out. There are only positives when it comes to recycling weed with the balloon technique.