Top definition
When you joke on a person who cough's or does something germy. You say they have fline swu instead of saying swine flu so that people won't think your a jerk for joking on something so serious.
friend:*cough cough*

you:ewwwww stop coughing around me before I get that fline swu!
by bubblez757 July 11, 2009
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