A label used at the University of Southern Maine to describe someone who has the personality of a gopher. This term comes from the fact that many of these people sit on the right side of the cafeteria. Many freshman start their school career on this side, but as the years go by their numbers dwindle. This might be due lack of focus or motivation.
joe(a right-sider): hey! where'd pete go?
by centrist2 November 17, 2010
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The art of crapping in the toilet tank above and behind the toilet bowl. So you're taking the lid off of the back of a toilet, and crap in the toilets area that holds the mechanical parts of the toilet bowl.
Bob was so hung over, he told me that when the bar tender cut him off, he went to the bath room and delivered a top sider to the morning clean crew that was rank.

After he fired me, I went to the bathroom to get changed and left a top sider for him to clean up.
by TopperShut April 18, 2007
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upper west siders live in rent controlled apartments that they brag about paying $350/month for. They are the cheapest, most inconsiderate, self-righteous people walking around, in addition to the sense of entitlement that they harbor.
That Fucking Upper West Sider has a huge sense of entitlement, plus she didn't pick up her dog's shit from the middle of the sidewalk!
by the Geniette in a bottle July 7, 2010
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Someone who is totally for the good guys in any story because they are the good guys. They usually hate the idea of sympathy for the bad guy and will not usually do something like play an evil character in an RPG.
Guy 1: The Empire is bad ass, right?
Guy 2: No way, Alliance is where it's at.
Guy 1: The Rebels are cool and all, but not as cool as Stormtroopers
Guy 2: But the Empire is evil.
Guy 1: Damn, you're a good guy sider.
by Flameboy_silentbob July 6, 2008
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Being mindful of where/when you ejaculate as not to inconvenience others.
She wanted me to cum on her face and in her hair, but I knew she wouldn't be able to clean herself off before the funeral started, so i decided to be cumsiderate of others.
Cum-siderate.
by Tommy Shenanigans July 1, 2017
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Being mindful of where/when you ejaculate as not to inconvenience others.
She wanted me to cum on her face and in her hair, but I knew she wouldn't be able to clean herself off before the funeral started, so i decided to be cumsiderate of others.
Cum-siderate.
by Tommy Shenanigans July 1, 2017
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When you like someone who doesn't like you back or When someone likes you but you don't like them back.
Why do I always get asked out by guys that I don't like? And guys I do like, I'm always invisible. One-Siders, forever my life. :P
by Ryanne Renetier October 28, 2021
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