Some smokers have been caught desperately blowing smoke into vacuum-operated washbowl drains and toilet bowls.
Son Bernie (Anthony Holland) is a leaky, self-expressing drip, the kind that leaves a brown stain in a washbowl.
When his stepfather leaves the bathroom, Seryozha goes shyly to the washbowl, makes a tentative little splutter of his own, and then dries himself on the same towel his stepfather .