What does RU? mean?

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