YHBT - You have been taken
YHBT - You have been told
YHBT - You have been trolled
YHBW - You have been warned
YHGASPL - You have got a serious problem, lad!
YHGMTPO_ - You have greatly misunderstood the purpose of ___
YHL hAND - You have lost the hand
YHL - You have lost
YHM - You have mail
YHTBT - You had to be there
YIAH - Yes I am here
YIC - Yours in Christ
YID - Yes, I do
YIU - Yes, I understand
YIWGP - Yes, I will go private
YKIYEI - You killed it, you eat it
YKW? - You know what?
YKWIM - You know what I mean
YKWYCD - You know what you can do
YKWYCD - You know what you could do
YKYARW - You know you're a redneck when
YKYATP - You know you're a tired parent
YKYB - You know you've been
YKYB_TLW - You know you've been __ing too long when
YKYBHTLW - You know you've been hacking to long when
YKYBOTLW - You know you've been on-line too long when
YKYHBPQTLW - You know you have been playing quake too long when
YKYHBxTLW - You know you have been x too long when
YKYWTKM - You know you want to kiss me
YL - You'll live
YL - Young lady
YLYSC - You're lucky you're so cute
YM - You mean
YM - Young man
YMBJ - You must be joking
YMMD - You've made my day
YMMV - Your mileage may vary (your experience may differ)
YMMVG - Your mileage may vary greatly
YNK - You never know
YOWTWYWT - You obviously weren't thinking when you wrote that
YOYO - You're on your own
YOYOW - You own your own words
YPOM - Your place or mine?
YR - Why are
YR - Yea, right (sarcastic)
YR - Your (sacastic)
YRG - You are good
YRPLCOMN? - Your place or mine?
YRYOCC - You're running on your own cookoo clock
YSHFRTT - You should have finished reading the thread
YSIC - Your sister in christ
YSS - You suck severely
YSWUS - Yea, sure whatever you say!
YSYD - Yeah, sure you do
YT - Yours truly
YTD - Year to date
YTLKIN2ME - You talking to me?
YTMOB - You turn me on baby
YTTM - You talking to me?
YTTT - You telling the truth?
YUPPIE - Young upwardly-mobile professional
YUPPIES - Young urban professionals
YVW - You're very welcome
YW - Young woman
YW - You're welcome
YWEL - You're welcome even less
YWHOL - Yelling 'woohoo' out loud
YWIA - You're welcome in advance
YWSYLS - You win some, you lose some
YWTHM - You want to hug me
YWTKM - You want to kiss me
YWTLM - You want to love me
YWVM - You're welcome very much
YY4U - Two wise for you
YYSSLIBTO - Yeah yeah sure sure, like I believe that one
YYSSW - Yeah, yeah, sure, sure, whatever
Z
Z - Zero
Z - Zoo
ZAC - Z's are calling (time for bed)
ZP - Zero perspiration (no sweat)
ZZ - Dozzing, asleep, sleeping
ZZZ - Sleeping, bored, tired
ZZZ - You're boring the heck out of me