A person who doesn’t look through a group chat and therefore sends posts that everyone else has already seen.
Person 1: *sends post

Person 2: “chill out mason jr. that was literally sent to the chat like an hour ago.”
by NotTrent_ May 19, 2019
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Masonic home is a group of legends who usually play soccer
Do you play for the Masonic home booters
by 989mb June 13, 2016
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An iconic meme in the a Summer high fandom . Mother Mason is Mason Levi's face on mother Marry. Mother Mason looks down on and protects all innocent Mason girls who can't cut a break.
Laura: "I was blessed by mother Mason"

Mason: "I'm glad you're all right <33333"
by Mother Mason February 23, 2017
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A homosexual threesome where man #1 puts his penis in man #2’s mouth while man #3 sticks his penis in man #2’s anus all whilst watching anime
Hey did you see Micheal doing the mason dotson, it was a cumsplosion
by Jake Pog April 19, 2021
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A girl who exist
Jesus Christ I'm not a guy :l
? Hey Mom can I hang over with girl Mason

Parent: Ofc he can come over whenever
/ : :me
by BodieCallie March 14, 2020
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1. A slang shorthanded way of referring to the mason dixon line commonly used in southern states. (Generally used in supporting racist policies and areas of the south or in dismissal of the northern "yankee" states and their ideals.) (Dixie being short for Dixieland and/or Dixon)

2. A food brand found in some Costco and other club store locations around the United States with a focus on southern foods and cooking.
1. We learned about the Mason Dixie today at school
2. South of the Mason Dixie

3. Grab me a box of Mason Dixie southern style buttermilk biscuits at Costco.
by UniversalMummy May 1, 2021
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