hehe...
I guess that way could work...
It is not as easy as it looks..
You have to get your lips just right... I can blow the vuvuzela rather well.. I have surprised a few people as football matches.. hehe
Hubby taught me how & I can now do it better than him.
I would say that you need to have your lips rather tight & then blow hard..
Little dude tries his best & gets the sound right..
