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3.
A bastardisation of 'It's Doom', used to explain the impetus behind going to see the Doom movie despite it's obvious lack of quality.

It is best said at high volume whilst stretching out the 'o's.

It is also fun to use as a greeting or a way to communicate how crazy awesome everything is going for you and your mates.
'Hey'

'Stoom, bitch'

'I just got a fat, fuck off telly for the living room for us to watch.'

'STOOOOOOOOM!!!'
by Pilot13 February 07, 2006
 
1.
popping xtc pills.
Lets stoom tonight!

or are you ON (stoom) tonight?
by xtc Monte Carlo November 02, 2008
 
2.
A ciggarette.
Could you puch me a stoom?
by cooper1 July 18, 2008
 
4.
to be quiet in a tense situation. Another word for quiet or silent
keep stoom, humphrey is sleeping
by RNDMLaw!? February 23, 2005