As Gareth has already pointed out, this oft parodied song has been used as a beer advert:
Whitbread Best Bitter advert, 1982
This was a parody on Abdul Abulbul Amir. One of a series of two or (possibly) three. The first concerned our two combatants arguing over whether beer should be drunk in "The Bar" which tended to be men only, and suitable for telling 'blue' jokes; or in "The Lounge" where one has the benefit of the presence of ladies.
The second is shown below, and was found, complete with video, at Whitbred Ad

Whitbread Best Bitter advert, 1982

Now stories are told of a brave man of old
Whose interest was Whitbread best beer
But he new a klutz who drove him nearly nuts
That was Abdul the Bulbul Amir

Now that snake in the grass was a pain in the neck
Claiming Whitbread tastes best from the jar,
And this man most irate, with his own glass quite straight
Was Count Ivan Skavinsky Skavar.

Well those boastful old goats went out canvassing votes
But one thing they both did forget,
Be it straight glass or jar, Whitbread's not particular,
'Cos the best "Best" needs no etiquette.

Nigel