When your friend is down for a little milky white in their water after a long hard day of pounding.....drinks they order an extra cum slick in their water.
The exhausted Keith was ready to complete his day and finally fall into a deep post pounding....drinks....sleep so he ordered a hot cum slick in this water to cap off the exhilaration.
Used to reference the anatomically modern female humans' dimples commonly found situated within the lower back region that corresponds to directly above the buttocks.
This word's creation/existence may be attributed to the potential for pooling of ejaculate within the aforementioned dimples upon employment of coitus interruptus birth control methods during acts of sexual intercourse that involve rear-entry position-type sexual positions -- such as doggy style.
"Look at those sweet little cum cups on that show-piece grade model of ass"
"Pulled out from behind and filled her cum cups up like a Polar Pop from the Circle K!"