Top Definition
Any generally harmless computer software that is designed specifically to vex or irritate the end user, often installed on the user's computer without knowledge or consent.

Vexware can include - but is not limited to - applications with uncloseable screens, infinite message loops, or the changing of the user's desktop wallpaper without consent.
"While I was away from my desk, someone installed some vexware on my machine! Now, every time I restart my computer, Freddy Krueger says, 'Welcome to my world, bitch!'"
by Aardaerimus February 12, 2012

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