To call shennanegains is to expose trickery or deceit. Similar to "calling haxorz" or " calling a bluff". Can also be used to point out something that is astoundingly lame.
"Hey, I got laid by (insert model's name)!"

"Dude...shennanegains."

or

"Dude, I just got 4 billion kills on (insert game) in thirty seconds!"

"Dude, I call shennanegains..."

or

"Dude, I got fired..."

"Man...shennanegains"

by XQ!9 July 11, 2008
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