What is You Know It!?
1.
To totally disregard what someone is saying or said, and just agree with them completely whether or not they're right.
Example 1
Guy A : Sometimes I wonder if I should even be alive...
Guy B : You know it!
Example 2
Wife : Honey, I'm pregnant, and I don't think it's yours..
Husband : You know it!
Example 3
Guy A : Should I get a...
Guy B : You know it!
Guy A : But you didn't even let me finish...
Guy B : You know it!
See
Random Words:
1.
Someone with no balls; a coward; a big whiney pussy; famously used in Harold and Kumar
Dude just do it. Quite being a little vagina mcv..
1.
Making Base Contact; "saying" meaning contacting your wife, girlfriend, or serious female relationship via your cellular phone..