I found an attribution to Mavis Leyrer on somebody’s blog . . . .

Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand - strawberries in the other, body thoroughly used up, totally worn out and screaming "WOOHOO - What a Ride!"

Attributed to an octogenarian named Mavis Leyrer, of
Seattle by Google Answers, at least.

so I started searching more and found that her granddaughter is not necessarily in agreement . . .
http://www.nwoutdoorgrrl.com/index.p...lifes_journey/
http://www.fullcirc.com/weblog/2004/...y-blogging.htm

Apparently, the quote that is going around the internet isn’t as frisky as Mavis was or is. Sounds like Mavis would consider “woohoo” a bit tame.