shit

Although "shit" is used in english speaking countries to refer to poop, it is used in french slang to refer to the cannabis resin, along with the words "cons", "pillon", "frappe". It is also used in "verlan", a form of french slang that is inverting syllabes of a word. Therefore, it becomes "teushi".

J'ai choppé ce shit à un pote de mon frère.
I bought this cannabis resin from a friend of my brother