The Blob

We went to SM City Davao last time to buy Keona's milk and at the SM ground, we see a swimming pool with a balloon with kids inside.

Kids are having fun

Putting oxygen inside the balloon

Here are the rules

Upon seeing it, I right away remember an old movie of Jackie Chan "Armour of God". There's a scene in there wherein Jackie Chan was inside a balloon, just like the blob when he was chased in the field.