I LOVE that "dunk" story! It sounds like a Ben Stiller moment. At one time I was able to dunk, but they weren't what you'd call ferocious, due to the fact that I'm a two foot jumper and I can barely palm a basketball, which left me having to do some odd things to hold on to the ball long enough to get over the rim. I'm about 6'1" and I used to have a 32 inch vertical leap, but the 60 pounds I've put on since high school, plus a serious ankle injury in a college intramural game have put a damper on my dunk days. Now I can only get a couple inches over the rim.
However, I've gotten crafty in my old age, and I don't know how many times I've put a Vlade move on some young punk, leaving him wondering how you can shoot from below the waist while spinning and looking away. Being crafty has its advantages. Besides, my little brother, who is 6'4", can dunk just about anyway you want him to, so I live vicariously through him.
On a more somber note, I once saw my dad dunk when he was in his mid 30's, and he did so without warming up, at a weight of about 250 lbs. I always lived with that through high school and college, even being known as "Vert Man" (from the Mountain Dew commercials and my above the rim blocks), that I couldn't outjump my fat dad.