shin pissing 

to urinate on another persons shins

to knock on the front door of a house that you do not know of the occupants. upon the owner coming to the door to place your penis through the letterbox and urinate on the homeowners shins therefore shin pissing

this particular practice may be unique to the North East of England

shin pissing by theprodigy01uk March 3, 2010

shitpissing

An individual, group or entity participating in an establishment, concept or field and impacting it negatively, to a point which the original establishment, concept or field either experience a setback in progress, no longer fulfill the original intent or becomes unrecognisable. Impact could be through direct or indirect action(s). Impact could be the result of intentional or unintentional infliction.

"Gender study students are shitpissing in the university's pool of logical, talented and successful alumni."

"Hip-hop acts in the rock hall of fame is shitpissing on rock music!"

"I’ll say it. $EOS is shitpissing in the crypto currency pool. They are setting the space back by years."

shitpissing by Johnny Crypto June 23, 2018