Be forewarned: this is a riddle in the spirit of riddles.
Given the following:
What are the next digits?
Note: I did not specify the number of digits you should give, because, if you know the answer, you can continue to correctly add an arbitrarily large number of digits.
I could ask you give the next 4 or 5 digits, but you would probably want to give more than 4 or 5 digits.
the next 7 digits are 999999999
Sound out what you see... 3 dots, 1 four, 1 five, 9 twos, 6 fives, followed by 3 fives, then 8 nines.