mattbelling 

The act of shoving ones fingers into their anus, often used for sexual pleasure, then removing the fingers and smelling them.

Jeff was so desperate, he decided that mattbelling would be a good idea.

mattbelling by ryan4527 August 6, 2009

Martelling 

1. The act of telling on someone else to throw the blame off of yourself.
2. Telling on someone else when you get caught to make what you did seem not as bad.

1. Did you see Walter martelling on Henry, he totally threw him under the bus to save himself.
2. I know I cheated on you, but you know Bruce cheated on Megan every weekend.

Martelling by Therealfarley September 30, 2020

Mabelling

When you know the answer to something but decide to mumble it to yourself instead of saying it out loud cause you shy that way.

The professor asked a complicated question in class. Juliana was mabelling next to me.

She keeps mabelling to herself in class

Mabelling by piropiro November 26, 2019