When you're hiking for a long period of time, and your butt crack feels dirty and sweaty. So you pull down your pants and underwear, bend over, and let the gust of wind blow freely through the crack. It's refreshing and soothing.
stated as a question,"amiright" is a declaration of correctness even when wrong. Most often used when giving a socially accepted opinion. "amiright" is also used to humor those taking the statement too seriously.
Often followed by a 'high-five'... a "amiright" can be either be false of truth. OR a sarcastic dismissal.
"that bitch is cold. amiright!?" *high-fives ensue*
"I'm so drunk I could fuck a panda." *awkward looks* "amiright!?" *high-fives ensue*
"I worked so hard my dick fell off, amiright!?" *awkward looks* "AMIRIGHT!?"... *reaches for high-five*