The speaker was surprised by the rapid growth of his YouTube channel, reaching 100,000, then 500,000, and eventually 1 million subscribers, exceeding his initial disbelief.
"And then we hit 100,000 subscribers and I couldn't believe it. We hit 500,000 subscribers and I couldn't believe it. And then one day we hit a million subscribers and I was like, 'Oh crap, I hope my brother doesn't remember this promise because I don't want to shut this down.'"