The act of urinating on another person in order to gain friendship or impress them.

Someone who at first meeting shows a little bit of their douche self, but on getting to know them better, the full extent of their doucheness becomes apparent. (Likened to the iceberg that only shows a small fraction of its total size)

When two Guys (usually) face eachother (may not be facing eachother due to strategical aspects) and start Pissing on eachother.

There are a few variables determining who wins, some times who ever is the least drenched etc. But in the end, it doesnt matter because everyone has fun.