YCSI is a commonly used acronym for "you can suck it". Such acronyms are common among today's texting-crazy youth and refers to the act of fellatio. This term can be used by either gender, however, without confusing ramifications.
"Ur mom looks hot, lol"
Prices shown in USD.
Log in with Facebook to save your favorite definitions
and share them with friends.
Vul hier je e-mailadres in en ontvang elke ochtend gratis het Urban Word of the Day!
Je zal emails ontvangen van email@example.com. We zullen je niet spammen.