It's a magical phrase used to expel evil spirit sparks farts from the magical coronadrunk guy disease. Smoke pot whilst yelling moocowzam and you are gravy. Santa gravy
Kenny yelled loud as he farted after smoking a bowl moocowzam!
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi