3 ms·

I agree, this looks like a large mylar party balloon, like this 33-inch Batman balloon available in the same shape: https://www.partycity.com/batman-balloon---c

• pankajdoharey 6y ago
  Perhaps it is Marsh gas or Peculiar Cloud Formation.
• lovetocode 6y ago
  What a great observation by everyone in this thread. You can even make out his fist on the left side of the balloon.
• etrautmann 6y ago
  That is dead on, amazing