Kamus Lengkap Istilah dan Singkatan Chatting, Milis, SMS (O)

Huruf O
O RLY	oh really?	oh, yaa?
O4U	only for you	hanya untukmu
OBTW	oh, by the way	oh, omong-omong
OF	on fire	terbakar
OFN	old fucking news	berita udah basi
OIC	oh, I see	oh, begitu
OK	all correct	semua benar
OL	old lady (wife, girlfriend)	istri
OM	old man (husband, boyfriend)	suami
OMFG	oh, my fucking God/gosh	ya Tuhanku
OMG	oh my god / gosh / goodness	ya Tuhanku
OMW	on my way or oh my word	oh, kataku
OOC	out of character	diluar karakter
OOT	out of topic	diluar topik
OP	original poster / Operator / Outpost	poster asli
OS	operating system	sistem operasi
OT	off topic / other topic	lain topik
OTOH	on the other hand	disisi lain
OTP	on the phone or one true pairing	di telepon
OTTOMH	off the top of my head	di puncak kepalaku