When someone changes their opinion depending on who they're talking to or what the crowd thinks.
(group conversation)
Person 1: You like Hybrids Person 2
Person 2: Not really (The switch sider)
Person 3: I like Hybrids alot (budding in)
Person 1: Yeah their cool (adding his 2 cents)
Person 2: Yeah their Ok sometimes (becoming the switch sider)
by CoderGreen February 22, 2007
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When you're a bigger fan of Sara Quin than you are of Tegan Quin.
Person one: Tegan and Sara are my favourite band.
Person two: Omg, me too! S-Sider or T-Teamer?
Person one: S-Sider all the waaay.
by skqlover. March 29, 2010
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A sexual position used during applecourse due to the side-slung location of male apple genitalia
After a long day in the cold, he was ready for a hot apple sider
by All Access Andy February 5, 2009
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When a couple insist on sitting in a restaurant or bar in a booth or table on the same side , when there is a perfectly good other side to use. Most commonly forced by the guy in the relationship that is jealous, insecure and has to keep an eye on anyone that might be looking at his girl. Or a couple that is way overboard into the PDA. The ONLY time that being a Same Sider is acceptable is when the couple is old. Because its cute....
Same Sider
by msraulerson January 19, 2011
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A label used at the University of Southern Maine to describe someone who just isn't right in the head. This term comes from the fact that many of these people sit on the left side of the cafeteria. Many freshman are wrongly called this name because they do not know better: they tend to figure this system out fairly quick.
Joe: man, that guys just not with it is he?

Pete: what do you expect? he's a regular left-sider.

Joe: Ahhh, makes more sense now.
by huskybuck October 31, 2010
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Top-Siders are a type of shoe.
"Honey, where did you put my Top-Siders!"
by Beatrix February 27, 2005
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A person who listens to the less popular songs by hit artists.
Person 1: What are listening to?
Person 2: The Greatest Man That Ever Lived by Weezer.
Person 1: Didn't they make Pork and Beans?
Person 2: Yeah, this song is waaaay better.
Person 1: Wow, you're such a B-sider
by Jak Majik October 17, 2009
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