Untz

(Verb) to move up and down in a sexual way while pressing your torso against a best friend, stranger, or love and saying "untz, untz, untz" out loud. Untzing can happen in a group of 2 or more. It usually lasts for a few seconds and ends in everyone feeling happy and loved.

To be untzed is to be surrounded by one or more person who is making the untzing motions.

To untz is to be the one moving up and down.

"Omg Kelly look! It's Karl! Go untz him!"