Random Burper is a nice program that acts in the shade and generates random belching every minute which produces both surprise and fright to the user, so he repeats them until he decides to close it, for this you have to do it from the list of active tasks (pressing Ctrl + Alt + Delete), or move the cursor in the upper left, in the corner of the screen.
To make the sound to be more effective, increase the volume of the sound card to the maximum, and then, when the burp has passed, leave the card parameters again as they were.
Definitely a mess somewhat rude but fun.
You can free download Random Burper 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.