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, Reply)