Qapla! Heghlu’meH QaQ jajvam!
Treguna Mekoides Trecorum Satis Dee. I hope no one’s appliances, clothes, etc. start dancing.
Well, as this thread is still bobbing along, here’s one that just popped to mind: Klactoveesedstene (see the comments for some efforts at a meaning)
Cthulhu Fhtagn, what a wonderful phrase!
God DAMN it. You ruined my entry. Oh well.
“Umgowa!” Tarzan (Johnny Weismuller)
An amazingly versatile utterance, always a shouted command, usually to an elephant.
Meaning (IIRC): “come here” or “go away” or “pick it up” or “round up a bunch of your closest friends and converge with them at the place where Jane is in peril.”
yong ding rockity, rum ting pa-tooo nip nip nip, yaaaahooouuuuuuul
With a rattum, pattum,
Para mee dicksa do mee nee
This one is a little too obvious (even with most of the sensible lyrics excised)
*… Nunubididoo
Nuh mur nuh murh ni nong nurl …
Be-dobby-durgle …
Bedurble-diggle-doggle-dooby-doggle-durgle-day
I’m trying to say nungy-nangy
Ningy-nongy …
Be-dobby-durgle
Durgle-dobby*
Ochi tchornya
Endeftala vithy dan. Endeftala tala dan. Deftala, deftala. Dan in endef. Tala, tala, tala. Deftala.
Either this is not particularly arcane or my knowledge of Russian popular music is better than I thought. 
Horroway anaway too oo. Toronto bosh, toronto bosh. Taraway ah way taa ooce ta ah hah. Ya tenn ay to yah…Boom!
Classic:
Kenny Everett used a lot of nonsense in his shows - that was in the title:
Hasa Diga Eebowai
You people are just putting the pussy on the chain wax
Moloko Plus
Moloko Synthamesc
Moloko Drencrom
Moloko Vellocet
Pulu si Bagumba.
The rotskin spotskin is motskin in the plotskin