Top Definition
The rest of the world calls them "mayflys," but they are referred to as "fishflys" in the American Midwest, most frequently around

These little fuckers come out for a few weeks each summer on the shores of areas like Grosse Pointe, St. Clair Shores and Harrison Township, Michigan. They only live for a period of 24 hours, so it's common to see some drop dead right in front of you as you take an evening stroll under a street lamp.
It's from all the dead fishflys under that street light, man. They're so fucking slippery and disgusting.
by kbuw July 11, 2011

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