YCSO

YCSO - abbreviation for : "you can suck one," (referring to a penis).

Used in a text, just to tell someone to suck it.

texting*
Boss-"FYI, you need to have this work completed by Friday"
Employee- "Hey, I can make abreviations too; YCSO!
Boss- "What does that mean?"
Employee- "Look it up on urban dictionary..." (You can suck one)

by Taylor The Man September 13, 2011