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1.
STO
'Smiles To Oneself' - when something is moderately funny, but not funny enough to make you laugh out loud.
1) Whats the fastest food in the world?
2) Dunno
3) The Runner Bean
4) STO
by G27 September 22, 2008
 
2.
sto
Usally used by people in the south, and/or 'thugs'
Meaning: Store
Yo im goen to tha sto, you bitches want something?

And dont get it twisted the south IS THE BEST!!
by Miami November 11, 2004
 
3.
An expression used to define a cool/amazing event or object and/or an awesome situation.
"That car was so stos!"
"The party at her house was stos."
"Her attitude was so not stos."
by Kelly McDowell January 11, 2013
 
4.
sto
the slang for store
i'm fittin to go to the sto
by George Courtney February 23, 2004
 
5.
STO
State the obvious .
Short person : oh hi

Normal person : hi , youre short .

Short person : well no shit . STO
by ChelleyGenius . September 04, 2011
 
6.
sto
she the one
sto is just a simple statement for the person you want
by tcollins February 22, 2011
 
7.
Sto
Short way of saying customer who buys drugs from you, or "custo"
"ay sto, whaddup"
"BITCH I AINT YO STO BECAUSE I BOUGHT OFF YOU ONCE"
by AStoMyself February 14, 2009