The vuvuzela is perfectly shaped to be inserted into one or more of the vuvuzelist’s bodily orifices ...
Except if I yelled “Hey - blow it out your arse!” then I would get ejected! I guess it is just like anything else in sports, the player needs to adapt to it and not worry about it - but it is hard enough to get a 12/13 year old to ignore what they think is “unfairness” on the field and just play on.