Often an expression of disbelief.
Used to identify which Vanessa one is speaking of...even if only one Vanessa is known to the user of this expression. Not just any Vanessa. Vanessa Wow.
Expression Coined by Jodi Trout.
"I traded it to the bathroom attendant for a cigarette and a pink starburst at 3am"
"Vanessa WOW." accompanied by an aghast expression.