Top Definition
Someone who is a geek or nerd.
For God's sake, will you stop going on about FoxPro, Ben! You're such a speff!
by thewomanonthetrain May 31, 2007
1 more definition
A useless person, probably with genetic defects of an undisclosed type.
That Chris Beckett is a right speff.
by Steve Clarke September 30, 2003

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