When you're a bigger fan of Sara Quin than you are of Tegan Quin.

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....

When someone changes their opinion depending on who they're talking to or what the crowd thinks.

A sexual position used during applecourse due to the side-slung location of male apple genitalia

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.

A woman who looks hot as fuck from behind, but when you see the front she's ugly as fuck.

Kinda like a butter face but you can say this in front of the person.

Top-Siders are a type of shoe.