Ultrasound Top 10 School Prank

Ultrasound school pranks. Funny jokes and sounds for free! Top 10 stun pranks for school friends. If the teachers are your friends they could listen ultrasounds with you! They could hear stunner simulator and get angry so use it on the right time! Ultrasound - it's a sound which human doesn't hears*. Ultrasound Top 10 School Prank couldn't stun you for real. It's just a joke with strange sounds.

*Ultrasound waves has frequencies higher than the upper audible limit of human hearing.

Ultrasound Top 10 collection includes dinamic sounds and flat sounds. Try them all and choose your favorite! If you can't listen it for a long time - use an earplugs! But remember! If you hear some sound it couldn't be actually ultrasound. Only cats and some animals able to hear it. Try this sounds with pets and write us about results!
Ultrasound Top 10 School Prank - it's a game with your friends by simulation of sounds! Play popular ultrasounds and play with school friend! Try it in different times and places - reaction could be different! Maybe your teacher would laugh! Or scream? If someone hears your ultrasound stunner, he couldn't recognize sound source. We recommend you to warning friends and other people about your ultrasound simulator! People could react very strange and funny, calm or loud. How funny next reaction will be?