What is Effer?
1.
A variant of "fucker" used on Canadian television, primarily "Royal Canadian Air Farce". Pre-teens have been known to use it when quoting, should the term "fucker" come up in the quotation.
"Pig effer!"
See
2.
Someone who owns you, especially in Counter-Strike, Starcraft, and Reversi.
"Wow that guy sure was an effer!"
"Naw, he wasnt THAT good..."
"Ya, your right, what a scrub."
See