effshiz 

A euphemism for "fuckshit." Used as an exclamation.

"Holy effshiz!"
"Oh, effshiz."
"Whatever you don't do, don't look at the Holy Effshiz Picture."

effshiz by liliennnnnnn December 20, 2006

effshit 

To lose all sense of reason in a fit of elation or rage.

If Butler had hit that game winning shot, I would have gone effshit!

effshit by joejoejoejoejoejoejoejoejoejoe April 6, 2010