[Alupis]

Every ultrasound device makes sound, sometimes a lot of sound, because it's vibrating all of the materials, liquids, and air around it.

[tadfisher]

So does every piece of baryonic matter in the universe, in which case I am proud to be an ultrasound device.

[antonvs]

Affirming the consequent fallacy.

"Ultrasound machines vibrate everything around them therefore make sound" does not imply "I vibrate everything around me therefore make ultrasound."