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A person that loves retro gaming, fast food, and doing a whole lot of nothing.
Dude #1: That one guy from up north is fun to game with.

Dude #2: He must be a Sizernino
Sizernino by Sizer95deOlive June 11, 2024
Related Words
A totally stand up person. A genuine fluffball.
Hey man, that was real cool what you did there, yous a really Sizer.
Sizer by tally8 June 30, 2024
Christina: I couldn't even finish two tacos, I'm stuffed!
Johnny: Yeah, they are rather sizely.
sizely by Babbersnabber July 24, 2025

sizemic activity

Refers to how a human's possessing extra-large genitalia can really "shake things up".
Da term "sizemic activity" could also humorously refer to da "ripples and undulations" dat can occur when playing wif an extra-amply-endowed chick's huge jiggly boobies --- one can actually produce "sizeable" wave-patterns in said jello-textured organs when kneading or bouncing them with his hands.
sizemic activity by QuacksO November 20, 2025

emo-sized 

in a emo type state but not really wanted to black your eyes or cut your wrist
Captin! Every time I crunch I get Emo-Sized because I know I'm getting fat then my girlfriend won't love me anymore! Now I just sit in my room in darkness crying listening to Hawthorn Heights, and then someone calls and I seem to be fine.
emo-sized by Tman00178 September 1, 2006

justin sizeless

an ugly ass mother fucker with the smallest pecker in the world.can't keep it in his pants and doesnt know the meaning of faithful.the only girl he can get now is a 14 year old slut.holla
justin sizeless is a home town zero.
justin sizeless by babyblue0016 January 9, 2009