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1.
A phrase made popular by Spongebob Squarepants. Used when excited, antsy, or trying to make an akward or unwanted situation less serious by quoting Spongebob.
Doctor: ok, time for your shot
Child: I'm ready!
by I~luv~squid January 10, 2009
 
2.
An expression stated when very excited, when bored, when sexually excited, or just being random. And when you say it you hafta say it in a deep sing song voice.
I'M READY! (emphasizing a deep sing song voice haha)
by ashley marie thats me April 15, 2008