The Origin Of Dab DANCE !

The Dab is a dance in which the dancer simultaneously drops the head while raising an arm and the elbow in a gesture that has been noted to resemble sneezing.
As a Sports Illustrated article about the phenomenon described the Dab, “The dance is pretty simple; one leans in to their elbow like they’re sneezing."  he Dab has its origins in the Atlanta hip-hop scene, but there is disagreement about who originated the dance. Artists frequently mentioned as possible originators include Migos (as in "Look at My Dab"), Skippa Da Flippa, Peewee Longway, and Rich
The Kid.

American rapper Bow Wow attempted to explain the origin of the dab dance, saying it related heavily to the cannabis dabbers community started long before the dance in 2012.
He was met with opposition from other rappers who immediately took to Twitter to insult and disagree with him.
There is also speculation that the dance originated from Dabbing, an action taken where someone snorts cocaine from their elbow while acting like they are sneezing.
However, there is no proof that this claim is true nor false. NFL football player Cam Newton of the Carolina Panthers is well known for performing this dance when he scores a touchdown.  In 2015, the Dab rose to national prominence in the U.S. As XXL Magazine reported in August 2015, "What started as a regional down South adlib is quickly becoming a masterful maneuver in clubs and on street corners. It’s called dabbin’."

The Dab gained popularity in U.S. sports following an eight-second celebratory Dab by Cam Newton, football quarterback for the Carolina Panthers of the National Football League, during a game against the Tennessee Titans on November 15, 2015.
 According to a Sports Illustrated account of the incident, "[w]hen two Titans players confronted [Newton] about the celebration, he continued to dance in their faces, even as he backed away."  After his famous dab against the Titans, Newton explained at a press conference why he had dabbed.
He credited a 16-year old for instructing him to "dab on them folks":  I'm a firm believer that if you don't like me to do it then don't let me in ... I just like doing it, man. It's not to be boastful, and from the crowd's response they like seeing it. ...

Tell me what to do "Dab on them folks," so I tried "Dab on them folks," in that tone too. "Dab on them folks." He's only like 16, but he's got an Adam's apple out of this world.  It was later confirmed that the 16-year old was Newton's younger brother Caylin.
Rich the Kid is featured in a YouTube video tutorial on dabbing. As of February 12, 2016, the video has been viewed more than 1 million times.  Jason Derulo taught James Corden how to dab during a November 4, 2015 edition of Carpool Karaoke.