What does RU? mean?

Are you? can be abbreviated as RU?
Other shorthands for Are you? are: U UP, WRYD, HAYP, WAYD, WAYGD, wyd, WAYLA, WAUF, WAUD, watcha, r u there?, WAYSH, HAYD, R U, wauw, WAYDT, WYWF, WAYRTTD, waycb, r u goin?, WAYDRN, r u da?, waygow, wau^2, wayut, WAYLTL, WAYOA, WRUF, RU/18, HRU, RUH, WUU2, Ruf2t, AYOK, AYSOS, AYKM, RU, AYT, RUOK, AYS, HAY, AYAK, ayty, AYDY, WUUP2, WRUD, AYFKM, AYFR, WUF, RUT, Wru, AYST, RUS, RUFKM, AYV, WRU@, AYC, WAYWT, RUOK?, HRY, UK, wruu2, AYATH, RUMORF, AYFKM, rur, :*) ?, ayd, RYS, wtrud, AYS, AYOC, ayto, WAYF, RU12, WAYTTD, RUUP4IT, Ruttm, RUNTS, AYCOOYM, uok, WAYTA, WAY, WAYT, AYFKMWTS, wayh, RUMOF, RUKM, WAYG, QRA, AUFM, whatcha, AUS, WAYSA, WRU, AYPWIP, ruk, WAYWO, hau, wutcha, AYTO, AYL, aysm, Ow ya' goin'?, AYR, RUWT, AYAOTD, WAY, RUTFAC, AYBS, RUFKM, HAYT, ru18, WUD, WAYW, aufsm, RUMORRUF, WAYA, waysttm, AYFT, ayh, ayfk, AYO, wutb, RUFKM, RUMCYMHMD, WRUTA, rugta, aufm, AUT, audy, rugay, YITE, waysw, WAYLT, yrusm, RUK, yrubm, WRUDATM, RUA2J, aymm, RUSH, WRYTA, rua, waug, ayfs, ayhn, AYFC, WAYW, aymf, ?u@, AYK, RUMF, ayagob, ay, WAYTA, ways, aya, AYAW, ruagoab, waya, RUCB, aytf, AYC, RU18, WAYLT, UMAD, RUSOS, AYB, RUFR, Ayml, AYHF, ruwm, WRUV4, AYA, WAYN, WAYS, AYC, AUSM, Ruf2c, AYMH, AYSC, AYGWF, WUF?, AYFP, AYBSS, ruabog, AYF, AYHF, rubz2nt, AYB, aym, AYRF, AYRF, AYMB, YAC, RUSOS, AUF, AUB, RUSOS, AYA, :*)?

Q: A:	What does RU? stand for? RU? stands for "Are you?".
Q: A:	How to abbreviate "Are you?"? "Are you?" can be abbreviated as RU?.
Q: A:	What is the meaning of RU? abbreviation? The meaning of RU? abbreviation is "Are you?".
Q: A:	What is RU? abbreviation? One of the definitions of RU? is "Are you?".
Q: A:	What does RU? mean? RU? as abbreviation means "Are you?".
Q: A:	What is shorthand of Are you?? The most common shorthand of "Are you?" is RU?.