I was quite proud of my 7-digit (in ICQ world, the SMALLER the UIN (why do I still remember these acronyms!) the BIGGER your penis was) ICQ number that started with 404.
404. Quite clever, eh? I guess there was a lot more HTTP 404 errors back then.
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Yes, I too remember my ICQ number but not the birthdays of... I PLEAD THE FIFTH YOUR HONOR!