About the best I can muster.
Was calling 100 and asking to speak to Busby. Repeatedly.

Never did get to speak to him:-(
( Blind Meach Cautiously optimistic, Fri 20 May 2011, 15:41, 8 replies)

hmmm, yes...we rang the operator when about 10
to ask 'are you on the line?' and when the operator replied 'Yes' we'd blurt 'well you better get off it then, there's a train coming!'
( Rotating Wobbly Hat That's not a banana. THIS is a banana., Fri 20 May 2011, 15:58, closed)

Is Mr Wall at home?
NB: Doesn't work when you ring Max Wall*

*almost certainly dead, actually, so it would not only not work, but would also be insensitive.
( scarpe We Stole Bikes, Fri 20 May 2011, 16:02, closed)

I hardly
need say anything about ringing the Samaritans then.
(username failed moderation, Fri 20 May 2011, 17:33, closed)

You insensitive bastard.
I just dropped my Wall's ice crea... Wait, we did that one already didn't we?
( Blind Meach Cautiously optimistic, Fri 20 May 2011, 18:29, closed)

Haha!
This was before I was ten. After that it escalated into full blown pranks with 'phones. I'd call a public 'phone from another with a view of the first, and when people actually picked up I'd pretend to be an engineer and tell them to shout down it, wave it around as far outside the box as possible "to check the functional robustness of the handset"!
I even got one as far as nearly putting the handset in water to check how waterproof it was!
THEN I grew up. A bit. Sort of.
( Blind Meach Cautiously optimistic, Fri 20 May 2011, 18:27, closed)

Have you got Prince Albert in a can?

( idonthaveafunnynickname Drink-Aware? Sure. I'm aware I want another drink., Sat 21 May 2011, 20:23, closed)

'Is your refrigerator running?'

( scarpe We Stole Bikes, Fri 20 May 2011, 19:17, closed)

No, it's switched off for its annual defrosting.

( flake has nothing against your right leg, Fri 20 May 2011, 19:55, closed)