a phrase made popular by Paris Hilton and Nicole Richie on "The Simple Life" the actuall meaning of the word is still unknown, but its fun to sing in an annoying voice while dancing sideways across a street.
paris & nicole: "SONASA!!"
woman on bus: "can you please shut up?"
nicole: "wanna join our band? im billy, shes silly, and you can be willy"
woman: "whats the name of the band?"
nicole: "the sonasas"
a term used to describe someone who is in a high level of intoxication. can also be used to describe an intense makeout session, as long as you are refering to an intense makeout that happened while drunk.
"man i got so sloshed last night, it was rediculous"
"i was hellof drunk and we sloshed for a good 10 minutes"