When you link someone to a website they have already seen. It refers to a fictional top-level domain (like .com, .net and .edu) that, if it existed, would house all the old shit everyone has seen but you.
Example 1
Guy1: Have you see tubgirl?
Guy2: you mean www.tubgirl.old?
Example 2 - The lazy approach
Guy1: Hey, check out todays woot
Guy2: .old
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Death by rolling on the floor laughing(rofl).
guy1: Wow John rofled so hard last night he died
guy2: Rofltality
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