The Brief: A "d**k appointment" is an arrangement to meet up for sex with a person with a penis.

DEEP DIVE
A d**k appointment refers to a casual hookup.
On a D.A.T.E , dick appointment tonight eventually pic.twitter.com/9o6R6LS4mv
— Marilyn MonHOE (@CupcakKe_rapper) November 25, 2018
maybe Iβll find a bf when i stop calling first dates dick appointments
— alexa (@playnikes) November 26, 2018
Namjoon interrupting bang pds dick appointment to pitch a new song ideapic.twitter.com/duxjsuvd31
— jena (@jeonsmono) November 16, 2018