Only trained professionals should attempt to use these.

Agh!
Gah!
Bah!
Grrr!
Gar!
Arrr!
Yarr!
Blargh!
Argh!
Ick!
Ack!
Oi!
Aff!
Aiee!
Oof!
Eeek!
Ahh!
Bleh!
Meh!
Blah!
Pah!
Rawr!
Aww!
Pfft!
Psst!

That is all. :3