When a person dies quickly and unexpectedly.
Jerry: 'What did he die of?'

Mike: 'Sudden Instant Death Syndrome (S.I.D.S.). His parachute didn't open and he died on contact.'

Jerry: 'Shitty.'
by jonnywords October 27, 2011
Get the Sudden Instant Death Syndrome (S.I.D.S.) mug.