Define Monochrome Blowjob Meaning

Monochrome Blowjob
To get a blowjob from two girls. One wearing black lipstick and the other wearing white. After recieving the blowjobs,
the lipstick rubs off on the penis. It now looks monochrome; Black, White, and Grey

Dude1: Man i got a monochrome blowjob last night and i thought i was in an old picture.

Dude2: Shweet
By Rubina