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1.
I Want That!: When said to someone male or female, It's notifying that you would want to undergo a steady relationship with the person it's said to. It also compliments them knowing you would try to get at them. It is said in a high pitched voice and usually will stop and get the persons attention to make them stop and think about it until they actually get it.
Michael: "I Want That!"

Lanea: (Pauses..)aww your sweet..

Michael: Will you go out with me?

Lanea: GET OUTTA HERE CREEP!!

Michael: But I complimented you...
by Grapes707 August 10, 2011
 
2.
When someone says something stupid, and gets stupid slapped, but their friend wanted to slap them.
Kid 1. Dude think about it 40*20 is 60
Kid 2. NO! (Stupid slap)
Kid 3. I want that.
by josh32393 September 04, 2007