mustool 

A very smart person. This is used to show a very smart person's ability.

Person 1: Hi mustool

Person 2: aww thanks

mustool by Ma3fneh July 28, 2020

mostool 

One who is drunk or high. A sh*thead to some or simply crap/garbage.

You act like such a mostool sometimes.
You'll be a mostool when you grow up, because you live unhealthily.

mostool by The Mostallion March 26, 2009