Insurance saleswoman Yvonne Mayer, 29, was unable to speak or eat for two days after ripping her windpipe when she blew the three foot horn during a street party in Cape Town.
The next day shocked doctors diagnosed her with a ruptured throat and ordered her to rest it completely to allow it to heal.
The bizarre injury is the first known vuvuzela-related accident since the World Cup kicked off last week.
Today Yvonne warned other football fans to take care when blasting their plastic trumpets.
She said: 'This happened to me on my first time.
'I thought I was blowing it right but perhaps I was trying too hard.
'They're fantastic fun and really bring people together during the soccer, but my experience has proven they can be dangerous if underestimated.
I'm hoping there was alcohol at this street party and that she drank copious amounts which would partly explain why she blew on a vuvuzela until her windpipe was ripped to shreads.
