Dankest

[Julian]

Dank means something thats really cool or epic.

In Meme friendly version,

[Dank Meme] refers to viral memes which are cool, super funny, epic, awesome, blah blah.

[Dankest] is the best version of that ( as mentioned in the high school [grammar class] )

Also theres also a site called [dankest].co which sells meme worthy shirts.

[Rihanna]

(especially of buildings and air) wet, cold, and unpleasant: