Phew, hopefully that means that being 28 still makes me a teenager!
First mountain bike when i was 12, i soooo wish i could remember what it was I remember it having a steel frame and an all-in-one stem/bar combo with bright pink grips. My parents bought it for me second hand out of the local paper, it was definately a well made bike but not particularly exotic.
39 - feels like 59 but I guess that will pass once I'm 40. Later this year is the 20th anniversary of my first MTB purchase. (I'd used flat bar racers for off roading up till then.