Meeting ancient, Nigh-immortal aliens... So many questions to ask.
For you to be that old, you'd have to be nearly immortal.
We're not immortal, but neither do we suffer from most of the biological effects of aging.
But you do suffer from some of them?
There are only a few effects of our extreme old age. Our memories, for instance, are not what they used to be.
Wait, let me guess... You've forgotten what the rest of the effects are.
I haven't forgotten enough for that joke to be funny again.