Hey, my Brain Age the first time I did it was in the low sixties. It doesn't mean anything. The next time I did it, it was in the high 30s. Since then, I haven't been above 30, typically scoring in the mid 20s (my actual age) with hitting the coveted 20 on a regular basis (depending on which of the random tests it gives.
On a side note, I don't think I've ever been able to score better than a Brain Age of 26 when Speed Counting is involved. I think that exercise is horribly broken.