Mum used to clock the smell of weed around us all the time, and we either had a great excuse or no excuse at all.
What this kid has is the worst excuse in the history of drug taking, as he tries to convince his parents that as the window was open, a cloud of weed smoke blew into his room. Lolz.
In typical parent fashion, dad says a few authoritative things and then disappears while mum goes positively bananas.
It gets a bit glitchy in places but really picks up around the middle: