Each balloon adds about 3.5 grams of pressure to the balloons below it (at least according to this experiment), so it’s safe to assume the balloons at the bottom would eventually have enough weight on top for them to pop. I couldn’t find any reliable info on how much pressure it takes for a balloon to pop though.

It’s not much different from popping a balloon with your feet - you increase the pressure until the balloon pops. Same thing is happening here, just with more balloons instead of… feet…? I phrased that poorly, but you get the idea.

Consider: Hammer.

🎵 Time is an illusion that helps things make sense, so we’re always living in the present tense… 🎶