Top Definition
Very common amongst international kids in Hong Kong, Sevens Syndrome happens during the last weekend of March where the Hong Kong Rugby Sevens take place. With all the rugby and partying atmosphere happening, people with Sevens Syndrome is so focused on having fun in the sevens they would do it at anybody's expense, often pissing people off before it even starts. Also easily angered by anything sevens related.
"Hey why's John getting all angry over Jason not letting him lend his id for the south stand?"
"Sevens syndrome"
by SevensBoy March 26, 2010

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