A disgusted Martin challenges Frasier and Niles to fix a "running" toilet instead of calling a plumber, but their efforts go down the drain.
After Martin bemoans his sons' rarefied tastes and avoidance of all that is ordinary, they try to prove him wrong by fixing the toilet; they make the problem worse, call in a plumber, and find that they've hired Danny Kriezel (John McGinley), a bully who tormented Niles long ago.
A disgusted Martin challenges Frasier and Niles to fix a "running" toilet instead of calling a plumber, but their efforts go down the drain. When the two plumbers - brothers Danny (guest star John C. McGinley) and Billy (guest star Mike Starr) - arrive, Frasier and Niles recognise them as the junior high bullies who used to try to flush Frasier and Niles' heads in the toilet.
Niles becomes agitated when the plumber called over to fix Frasier's toilet turns out to be Danny Kriezel, his nemesis from junior high. Frasier encourages Niles to speak to Danny as one adult to another, but finds his own resolve tested when confronted with Danny's older brother Billy.—crouchbk