Habanero Joke - When you hear a joke and it hits you like a brick, but only

When you hear a joke and it hits you like a brick, but only after you’ve already forgotten what the joke was.

My teacher told a joke. I laughed. Then I forgot the joke. Then I laughed again. Then I realized I had no idea what I was laughing at.

I heard a joke on the bus. I laughed. Then the bus stopped. Then I forgot the joke. Then I laughed again.

My dog barked at me. I laughed. Then I forgot why I laughed. Then I laughed again because I had no idea why I was laughing.