Top Definition
The act of comitting Seppuku (ritual suicide) while being off your mash on Nitrous Oxide (Noz) within a social arena such as a garden party or village fete.
Whilst pondering her activities for the day, Dapne was dismayed to see that the Sepukku stand at the town's centenary fair had run out of Nitrous and were not expecting any more supply until next Sunday's car boot sale. She was thoroughly looking forward to some Nozzuku.
by DonovanBailey July 27, 2007

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