These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Loses his head after sticking it out of a train window. He later has an altercation with his headless body after it comes to find him.
This trope is essentially what makes the cricket bat scene funny.
Vyvyan's "row of collies" tries for this, but doesn't impress Mike.
Going outside and pushing the entire left wall of the house inwards by several feet in a fit of frustration after finding out that the VCR's cord is too short to reach the plug (and then smashing the window to get back inside).
Mike hitting a golf ball into the toilet while Neil's sitting on it, and Rik inadvertently catching it after he throws it back.
Genius Bonus: In "Nasty", Vyvyan threatens to kill Rick, to which Rick sarcastically responds "What devastating repartee! Talk about Oscar Wilde!" Oscar Wilde named the younger of his two sons Vyvyan. Yes, that same spelling.
The Scrappy: Mike isn't anywhere near as popular as Rick, Vyvyan, or Neil, but Alexei Sayle's various roles appear to be most disliked, possibly because of how they come out of nowhere and proceed to interrupt the episode for several minutes. Rick is probably this in-universe, as well as Neil to some extent.
Tear Jerker: Surprisingly, the very end of the series where the bus they stole crashes and explodes. The ending credits have everyone who was in the series listed in alphabetical order, and not by what they contributed, which seemed kind of heartwarming and out of place at the same time. The sad "doo-wop" music also contributed.