1 definition by poontang r us

Top Definition
From the term 'rain on my parade', used to describe someone, who, when you are feeling at the top of the world and generally high on life, has to ruin it all by an highly unnecessary little comment.
Person 1: you'll never guess what...
Person 2: what?
Person 1: I just won a million pounds on the lottery!!!!!!!!!!!!!!!!!
Person 3: You'll still have to pay tax on it though.
Person 2: just rain on his parade, why don't you?
person 1: Rainer.
by poontang r us April 12, 2011

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