sis

short for sister

"HI SISTERS" = james charles

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SI

1. Spanish for "yes."
2. Misspelling of "is."

1. "I suck." "Si."
2. "NO YUO FAGOT A COMPUTAR SI NOT A HAT!"

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SI

self-injury

I haven't SI'd in two weeks.

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SIS

Snickering in Silence
new for LOL because it applies much more than LOL when texting/typing and trying to be quite

While texting in class i received a message with a prime time to say "thats what she said" and/or "reminds me of my saturday night" or even "I get that all the time" so I sis'd vs lol'ing

"idk what happened it just went everywhere after i touched it"
sis
"reminds me of my saturday night"

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SiS

SiS as in Shit Its Sunday Commonly used on sites like Facebook and Myspace

John: Aw man SiS
Kevin: Dude I know

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SI

SI is the abbr. of stupid idiot , although it can also be used in a way in which it means mug

I.E. billy you fucking si, si does not mean sigh which means you bore.

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SIS

Smirk in Silence:
The act of putting on a straight face after putting someone in a spot.
Pulling someone's leg as a group where everyone acts normal in a scenario that is funny.
Used on social networks, chat rooms and forums..at least could be!

Totally loved getting on Spook's nerves acting as if I don't know him at the bar last night. Pulled a SIS.

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