Definitions by HolmenOpa

Opa 

Verb: The act of violently inserting two or more fingers into another persons anus and exclaiming OPA!

Person 1: *Bends over to tie shoelaces*
Person 2: *Identifies an exposed anus and shoves two fingers into Person 1's anus* OPA!

Opa by HolmenOpa April 19, 2015