Casey Neistat OK Handsign 

A motoric action made by an individual when he/she is doing somehing extremely expensive,dangerous,exotic,etc
It could also mean that the individual gives zero fuck to what ur actually speaking
It has gained popularity when youtubers like Casey Neistat and Leafyishere have started to use it often in memes
Nowdays there are variations of OK Handsign which include puting it on ur nose,using it to hide ur chin ,using to 420 blaze(puting a blunt between index finger and a thumb)
It has gotten its name when another meme youtuber Pyrocynical used it in a meme fashion depicting it with casey neistat eating fancy food on a 28k dollars plane flight,

John:Yo fam u know my dad just got diagnosed with gangrenous super aids!!
Ryan:(OK Handsign)
or
Bob:Ahhhh(shooting some blak tar and does the Casey Neistat OK Handsign and posts it on twatter)

Casey Neistat OK Handsign by 123sqwrl123 December 2, 2016