Use APKPure App
Get Can't Believe You've Done This old version APK for Android
Ah f@#$. I can't believe you've done this
So basically this is an app...
Ah f@#$. I can't believe you haven't downloaded it.
Set as your notification tone, download the sounds, and play it over and over. You're welcome.
https://www.youtube.com/watch?v=_X6VoFBCE9k