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On the internet it is the abbrev. for 'Fire'. Meaning something is really hot! Based on the 'Fi' sound of five and the phrase "..err" which is how the asterisk is used in IM convos.
"Hey did you see the line for that new _____"
"Ya b/c DaT IsH Is 5*!
by Jerzkid87 November 20, 2006
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