INJ] One of these days, but not today.

(INJ) Technically, and probably in popular parlance too, a thunderstorm is defined by the electrical phenomena but there has to be precipitation for this to happen, but it need not be at the point of observation and a there's a specific meteorological code number for this (17, for the anoraks, of which I am one). There is no code figure for "freak storm" BTW. Top whack is 99, "heavy thunderstorm with hail", the "heavy" referring to the precipitation rather than the lightning and thunder. Also, I've noticed that "anarcho" is an anagram of "arachno". What have spiders got to moan about? There are 10¹⁴ of them, apparently.

An organisation? No.

irach] Human? *sustained applause* Yes
Raak] Paper? No
Kim] Does it move? *cries of "OOOH!"* More accurate to say that it involves movement
Chalky] A country? No

Rosie] Is it a sport? *cheering and loud applause* Not a sport, exactly, but close...
Tuj] Is it geographical? No.
Chalky] Relocation? No
Dujon] Does it involve dancing? No

[Rosie] I lived in Africa for a year and for a few weeks before the start of the rains there were repeated electrical storms but no rain reached the ground. Would the precipitation have been contained within the cloud structure? (feel free to transfer to the banter page if there's a long explanation - or tell me to go and look it up for myself!)

INJ] Tai chi? No

(ImNotJohn) OK - See Banter Page.

ImNotJohn] Extreme Ironing? No
Rosie] A performance of some kind? Yes, in the sense of Raak's answer below, but not more than that.
Raak] Does it involve a group of people doing something? *a mighty cheers rises from the audience* A perfect definition.
After-work drinks now, so no more for a few hours.

Don't get too pissed; we need answers. :-)

Rosie] Does this collective activity require a fair amount of skill and practice? No, neither (you can do it pissed, though there is an attendant danger).
Raak] A beer festival? No, but it is a mild form of exercise.

well - someone had to say it

Rosie] A Mexican Wave? No
Chalky] An orgy? No - this is perfectly SFW
CdM] Are the Vegetable and Mineral components essential equipment for this activity? *sustained applause* Yes - one of them is part of the name (though equipment isn't quite the mot juste for most of them)
Raak] Is it a type of dancing? No

ImNotJohn] Is it a traditional activity? Depends on the definition. The name of this activity dates from the last century, but people almost certainly did it before then.

ImNotJohn] Is the mineral liquid? *cheering and stamping of feet* Yes, liquid is one of the necessary components, though other minerals may also be involved in another component.

CdM] Ye Olde Timme-Tamme Sucke? Ouch - I wondered how long it would be before that came up. No, and not remotely close. Hint - finding the vegetable would help.

[I feel sure there must be a simpler name for it]