To curl your finger in a J shape and use it to lift someone's breast in an upward motion. Usually only done to fat kids or girls with big boobs.
My Girl friend annoyed me so much today, I had no choice but to J Hook her so hard her boob hit her in the face.
by take1 May 19, 2008
J Hook - Used in meteorology refering to the area of a thunderstorm that produces tornados. Usually associated with the "Dry line."
by Bob Turk August 26, 2012