When your arguing with your girlfriend and she says mostest isnt a word so you add it to the dictionary out of pettyness
by Hoao October 23, 2020
Get the Mostestmug. by Scrichy May 7, 2022
Get the Mostestmug. by Kluntbaby September 27, 2019
Get the Mostestmug. Even more than most. The maximum amount of anything. Many believe it to not be a word, but it still means a lot.
Girl: I love you more.
Boy: I love you most.
Girl: I love you mostest.
Boy: That's not even a word!!!
Girl: It is if I say it is!
Boy: I love you most.
Girl: I love you mostest.
Boy: That's not even a word!!!
Girl: It is if I say it is!
by Shasta_Shaman August 7, 2016
Get the Mostestmug. by JohnlovesCasera April 13, 2013
Get the Mostestmug. 
