While a picture is being taken, you throw your hands up and look excited in order to simulate being on a roller coaster, thus both ruining and enhancing the picture. Roller coasting works best if the people in the front of the picture do not know it's being done behind them. The more people roller coasting in the same photo the funnier it will be.

The rollercoast can be made exponentially more hilarious by adding more people, having everyone lean in the same direction, and having people organized in rows of two or four, to simulate an actual roller coaster. The effect is weakened significantly by the participants actually being on a roller coaster.
Everyone get into pairs and look for people taking pictures tonight. We're gonna do some serious rollercoasting
by Mr Lazy December 24, 2010
Get the Rollercoasting mug.
1; a roller coaster is simply a train on steroids, it is a train that runs on a track excepted it can do all kinds of maneuvers such as hills, loops, corkscrews, banked turns and the list just keeps going

Coasters are becoming better and better to the day because of the "battle" that is going on between theme parks across the world. The goal is to be the park that is known for its coasters, better than any other. Cedar point, a very popular theme park is only popular for its record breaker's. It is home to the first coaster to go over 200 feet, the first coaster to go over 300 feet, and the first coaster to go over 400 feet.

I am very aware that it is "roller coaster" not "rollercoaster" I just had to make it one word.
No wonder this park is so famous, this rollercoaster is incredible!
by Tim Lawson February 11, 2015
Get the Rollercoaster mug.
when you know people , a couple , that break up and make up every other day ; that are in love then hate each other the next day ; this word describes their relationship .
amanda and travis have a rollercoastic relationship
by bingowashernamo May 30, 2010
Get the rollercoastic mug.
you don't want to be predictable but close people will know..
"yeah its true, i really was on my period these last days. hormones are "amazing" arent they. rollercoastering."
by Krkič September 13, 2019
Get the rollercoastering mug.
When a couple sits on the same side of a booth at a restaurant with no one sitting across from them.
I observed Samantha and Philip rollercoastering at the sushi restaurant on Saturday.
by pip1776 March 14, 2011
Get the Rollercoastering mug.
the thing that makes your heart rate rise to the same rate as it is during sex. no joke. its on a video =
if you had sex on a rollercoaster, would you die?!
by darkXangel July 11, 2008
Get the rollercoaster mug.
When you're in 8th grade and a guy grabs your hand and swirls it in a rollercoaster like motion down his leg while massaging your hand towards his dick. He eventually leads your hand to the outside of his jeans and rests it on his bulge. You may try to distract him and reverse rollercoaster your hand to your own leg, but eventually he will unzip his pants and slide your hand in.
I went to the movies with John last night and he got on the Rollercoaster.
by Eltonjuan June 9, 2019
Get the The Rollercoaster mug.