CO2 is good as a propellant
as it can also put out fires
(
groovegenerator The man who mistook his wife for his wife,
Thu 17 Jun 2004, 12:11,
archived)
old paint tins with the lids on tight
put on a bonfire make great canons
(
eyebrows,
Thu 17 Jun 2004, 12:16,
archived)