Name that sound challenge

Day 99: Monday

Morning, Tim!

I have missed you. I suspect you are holding off writing in order to get the 100th post. While normally I’d be stubborn, I’ll let you have this one I suppose.

Hoping to entice you back, I have a challenge for you.

Name this sound:

Now, to clarify, I don’t mean give it a name. I know your kind.

I mean identify this sound.

Happy to provide hints in the comments for you, so just ask 🙂

Until tomorrow,

Zak