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The act of drinking with the intention of achieving moderate alcohol intoxication before moving on to a formal establishment - such as a pub or night club - where drinking will often continue to ultimately achieve the status of being 'steamed' (extremely drunk).
James:"Hey Matt, I think it's about time we got on with presteaming as it's getting a little late, don't you think?"

Matt: "Nah mate, we've still got time to fit in a good session, and then we'll be well on our way to being steamed by the time we hit the pub."

James: "Sound."
by Desertvarnish April 22, 2012
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