Similar to John Doe, in that the name can be used in any situation requiring an anonymous identity, or in situations where the individual's identity is unknown.
"I didn't want the credit card company to know my real name so I signed the application as Hagstrom Hagsworth"

"Damn that dude is drunk. Someone get Hagstrom Hagsworth to his room!"
by Hagstrom Hagsworth August 4, 2005
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