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1. lstm
laughing silently to myself
like when ur on aim but u really aint lauging out loud u use this cuz its funny but that not funny
steven :pete's snoring

ada :lstm
2. LSTMS
'Laughing silently to myself.'

Because sometimes "LOL" is a lie.
"Your mom."
"LSTMS." -dies a little inside-
3. LSTM
Laughing-Silently-To-Myself. The REAL alternitive to LOL, because really how often are you laughing out loud when you type LOL. Exactly. Not too often. And when you are laughing out loud, use LOL, otherwise: LSTM.
Sue: hey brad, guess what?
Brad: what?
Sue: I have Herpes :(
Brad: LSTM
Sue: That wasn't a joke!!
Brad: oh . . . sorry . . LOL!
4. sc2s
silently chuckling to self / to oneself / to myself
rosie was sc2s when she over heard the guys telling jokes

*text message*

girl: i wasnt lol-ing. are you crazy people on the train would think i was looney laughing out loud to myself
boy: so my joke wasnt funny?
girl: it was! i was sc2s
5. LQTM
"laughing quietly to myself"
because not everyone "laughs out loud" when they see that stuff online... the probably laugh silently to themselves so their neighbors don't think they're crazy.
sn1: it got so heavy that my shorts fell off
sn2: LQTM!
6. LTMS
Laughing To Myself Silently. Because who is really "laughing out loud" when they type LOL?
You: i fell into a bush earlier

Me: ltms
7. gstm
It's a texting lingo that means Giggles Silently To Myself
Cellphone A: I just got hit by an old women for asking where the cheese aisle was
Cellphone B: GSTM
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