A cocaine laced Marijuana cigarette commonly called a coke joint. During early transatlantic voyages, night watchmen would often smoke their marijuana cigarettes laced with cocaine to stay alert, yet when caught by the captain they would be given the lash. while receiving their punishment they would SQUAWK like a SEAGULL. Hence the term Squawking Gull.
If Billy keeps smoking "The Squawking Gull", the captain will really give him something to squawk about.!! Arrgghh!sqwuaking