When a male or female is just attractive enough that you would potentially shake you're hand in the "so-so" action. This being when your hand is held out and rocked back and forth to give an "okay or mediocre" judgment rather then a strong approval or dis-approval.
The name of the best girl/lady/woman in the whole wide world. Typically smart, beautiful, funny and intuitive. Most men that meet this lady will instantly fall in live and forever keep coming back for more. You will never meet another like her.