JunkMonkey
Lord High Vizier of Nowt
Mulligan was from a period when absurdism (I think this a more accurate description than surrealism) was at its height in British comedy. Marty Feldman, Graham Chapman, Terry Gilliam, Spike Milligan and Peter Sellers were masters of the art. Don't look for hidden meaning in their style of comedy because it (usually) wasn't there.
Bed Sitting Room is an example of what it must have been like to live inside Spike Milligan's head. Personally it was just too bizarre for my tastes.
I grew up listening to LPs of some of the Goon Shows [insert usual usual monologue about pre-internet availability of 'old stuff' here] and can practically recite episode like Tales Of Old Dartmoor and Dishonoured I listened to them so often:
"I struck out for the shore for ten miles I swam, the last 3 were agony ... they were over land... Finally I fell in a heap on the ground. I've no idea who left it there." etc.
Many of the lines from them have become family hand-me-down sayings:
"Oh.... the end fell off."
and
"Hold out your wallet and repeat after me: help yourself!"
I was quite at home in The Bed Sitting Room.