Getting food delivery in Melbourne ( critical in a lockdown ) is fraught with peril.
This simple story moves the conversation into a rolling discussion of films to watch in lockdown. Richard watched something disturbing so the topic veers to the safer ground of 80's action films. 
It then continues seamlessly into how Richard's children are trained like ninjas ready for the Zombie Apocalypse ( "the problem" says Andrew" is you're all too ready & are likely to go off at a false alarm " ).
Naturally, this leads us to Andrew explaining how Richard has slighted his Kung Fu school and what must be done as a result.