Dabbing
Dabbing (1) - Vaporizing concentrated
marijuana,
usually in the form of wax or
hash, by placing it on an extremely hot metal object called a nail and inhaling the vapors produced. The nail is usually heated via blowtorch. Inhaling this harsh and concentrated form of marijuana often causes one to cry and wipe one's tears away while coughing and passing a
bong.
Dabbing (2) - Performing the dance
move characterized by raising an elbow and tucking one's
head toward that elbow while raising and extending the opposite arm behind. This dance move is often seen while dabbing (1) since the dabber immediately coughs into his inner arm and wipes his or her tears away while passing a bong.
https://www.urbandictionary.com/define.php?term=Dabbing
"We got the whole world dabbing and they
don’t even understand or even know what dab is. First of all, dab is a strong way to smoke marijuana, right, it’s the purest form of marijuana,” said hip hop performer Bow Wow in an Instagram video post. “It’s extremely strong, so the dance comes from when you smoke it you cough.”
https://www.csmonitor.com/The-Cultu...lly-need-a-dab-of-drug-culture-in-our-dancing
To be fair there are almost as many sources saying that it's all one big giant coincidence. Those people are usually entertainers who don't want to lose endorsements or those who just simply do not know the culture from which it was created and people who have never in fact dabbed themselves or have even seen someone dab. The old fashioned way. Not the nifty little pens they have now