Stumbled upon this on the interwebz. Try saying some of these to yourself!

*Hyoko pyoko pyoko mi pyoko pyoko
Awasete pyoko pyoko mu pyoko pyoko.

*Kono Take o Kono Takegaki ni Tatekaketa no wa,
Take o Tatekaketakattakara Tatekaketa no desu.

*Kono ko ni tokonatsu no kokonatsu kokonotsu,
ano ko nimo tokonatsu no kokonatsu kokonotsu.

*Tókyó-to Tokkyo kyokakyoku-chó.

*Kanda kajicho kado no kajiya no Kanbei-san ga kachiguri katta ga katakute kamenai kamisan ga kanshaku okoshite kari-kari kandara kari-kari kameta.

If your fucking hardcore, I dare you to try to say some of these.