Después de algo más de un año del anterior Acrónimos y onomatopeyas en inglés, aquí va la nueva versión actualizada.

2: To.
4: For.
AFAIK: As Far As I Know.
AKA: Also Known As.
ASAP: As Soon As Possible.
BBL: Be Back Later.
BOC: But Of Course.
BTW: By The Way.
cu: See you.
CYA: See You.
DIY: Do It Yourself.
FYM: Fuck Your Mother.
FYI: For Your Information.
IMHO: In My Honest Opinion.
KISS: Keep It Simple, Stupid.
LMAO: Laughing My Ass Off.
LOL: Lough Out Loud.
NT: No Text.
OMG: Oh My God.
OMFG: Oh My Fucking God.
ROFL: Rolling On Floor Laughing.
PG: Pretty Good.
RTFM: Read The Fucking Manual.
STFU: Shut The Fuck up.
SYS: See You Soon.
TTYL: Talk To You Later.
U: You.
U'R: Your.
WIR: When it Is Ready.
WTF: What The Fuck.