Many songs have parts like "lalala..." that don't really mean anything. What are your favorites?

I know many such songs but I can't remember them all right away, here are some I can think of:

Scandal - Taiyou Scandalous: "Nanana"
Scandal - Yoake no ryuuseigun - "wo oh oh"
Kumi Koda - LALALALALA: should be obvious
Ayumi Hamasaki - until that day: "uh lalala, uhuh"
Ayumi Hamasaki - +: "La La La"
4 Minute - wait a minute: "Lala lalala"

I really like lalala for some reason.

I remember there's a very long part of "lalala" at the end of SCANDAL "Sayonara My friend"
And also pretty long of "nanana" at the end part of SCANDAL "Namida No Regret"

first song that popped out of my mind is Mmmbop by Hanson... the chorus goes like this:

Mmm bop, ba duba dop
Ba du bop, ba duba dop
Ba du bop, ba duba dop
Ba du yeah

I really like the song "Move" by MINMI. It is a "fun" type of song and it includes this part:
SHANANANANANANANANANANA ... NANANANANANANANA-NANA

The Song "Twinkle" by Kaela Kimura is packed with the line: "LaLaLaLaLu", it comes up 14 times in 3 minutes.

"Dobondobondo no Theme" by Tomomi and Mami

Some nonsensical maximum the hormone  8)

Pretty crazy and fun song, but I guess it is to be expected from them as their lyrics seem generally crazy.

On topic:
Superfly - Alright!!: Na na na...(a lot of them)
Ayumi Hamasaki - Step You: wow wow so wow wow (lots of them, 4x at the end)
Ayumi Hamasaki - UNITE!: wow wow wow
Ayumi Hamasaki - Memorial Address: la la la la
Ayumi Hamasaki / Sweetbox - Bold and Delicious: Yayayaya Gagagaga Dadadada Wowowowo(2x) (multiple times)
MINMI - I don't need your love: "na na na na na na na" and "ah ah ah ah ah ah"
ERIHIRO - Stars: LA LARULA LA RULA LALARU LALA (many times) and Wo~Wo~(many times)

From the GREASE movie:

We go together like rama lama lama ka dinga da dinga dong
Remembered forever as sho-bop sha wadda wadda yippity boom de boom
Chang chang changity chang sha-wop
That's the way it should be, wha-ooh yeah

(The whole song is like this)

Gimme Chocolate by Babymetal
and Apple pen Pineapple pen

Tongkantangto, kay Tsong, kay Tsang (This song is dedicated to Tsong and Tsang)

---- the only lyrics for the novelty hit "Tongkantangto" by singer-songwriter Ogie Alcasid, under his comedic persona Gosh!

The Police - "De Do Do Do, De Da Da Da"
Steve Vai - "kim pee du wee" An instrumental, but the title is the notes of the main melody he plays.

@MetalMickey

How are you on Vai's "Yo-Yo Gakk?"  It's his infant son's nonsensical first vocal performance.  Only he knows what it means.

The first verse (Mami's part) to Standard

Boys and girls and those who don't seem like either, Wow!(Wow!)
Bell pepper, onion, carrot, potato, tomato, cucumber, daikon, lotus root, sweet corn! (Young corn!)
America, Brazil, France, China, Japan, chachacha! (Japan, chachacha!)
Forever, forever this way...

(like....what?)