When you hear some thing crack under your bike wheel but arent sure what it was

Is that Flat Eric?

Mr Oizo!

The initial "oh shit!" to the nihilistic "oh well..."

If the bike keeps operating without issues, it's best to do a quick check to see if you dropped anything, and if you've still got all your stuff, you're probably safe to assume it was a pinecone or something

I've had spokes break on a regular basis. If you dont hear it, then another will break at some stage.