Smelling upper lip 

Mostly girls do it. They try to smell their own dry stinky saliva from the lips. This smell not exactly works as a pheromones bit its a big turn on for them. It is done pouting lips together and touching upper lip to the tip of a nose so that smell directly enters into nostrils. Most of girls frequently suck their lips inside their mouth just to make a coating of stinky saliva on the lips so that it will produce nice smelling effect once it gets dry. The other reason is just to block the nostrils and smell inside sidewalls of the nose. It also turns them on.

'smelling upper lip' is a big turn on for me

Smelling upper lip by bodyscience August 6, 2014

you're smelling your upper lip 

Smelling your upper lip is an insult for when someone is saying someone else smells, so they tell them that it's them, because there nose is close to there upper lip

"Y'all smell dat? Smells poor.."
"You're smelling your upper lip."

you're smelling your upper lip by Candy x Cindy April 15, 2020