Frank Skinner article: What on earth is a ‘k**b’ joke?

[Fifiesta]

Racking my brains to work out what on Earth this means.
‘Him in doors’ also confused.
Only a few years younger than him, and I can’t fill in the blanks.
Tried Google and urban dictionary,
Still not a scooby.
I don’t want to die not knowing…
Likely to be something best left in the ‘80’s (I’m guessing), so perhaps be careful how you answer.

For context, it was todays Weekend magazine, which we use for the tv guide and chuck the newspaper that comes with it in the recycling bin.

Knob?

Knob?

I would guess "knob" ?

Knob lol

Yes, knob jokes.

And him indoors is the male equivalent of her indoors, i.e. husband / wife.

Assume this is not intended to be in site stuff?

Oh blimey … it’s beyond obvious now 🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️
As you were good people.