What noise is the most annoying noise that wakes you up while you're sleeping 😴?

Waking up to some noise that someone or something is making can really start your day off in a bad way, especially when you weren't planning on waking up just yet.
For me it's my next door neighbor who turns on his music 🎶 at 1:30 a. m., and then I can't get back to sleep. 💤 😴
I have visions of getting my hammer 🔨 and repeatedly hitting the wall when he's sleeping 😌 and waking him up when he's not ready to wake up.
😖 Grrr!
What noise is the most annoying noise that wakes you up while you're sleeping 😴?
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