instances of involuntary laughter in songs

In “psoriatic” by Scott Walker there’s a bit where instead of singing what’s in the lyric sheet he adlibs “stuff the chancellor” and in the next line he starts to break up

At the end of the Who’s “Happy Jack,” Pete Townshend chuckles while shouting “I saw ya!” to Keith Moon. He had been hiding behind the mixing desk while the others were recording vocals, and kept trying to get them to laugh and/or fuck up the take.

The Byrds - whats happening?

The late Gordon Haskell at the end of King Crimson's Indoor Games.

Never figured out if Bono's weird laugh in 'Wire' is real or acted.

chet atkins/dolly parton "do i ever cross your mind"

the best
https://www.youtube.com/watch?v=y5ZENR3HlUg

In the first few seconds of R.E.M.'s "Stumble" there's a sound that might be a match striking; Stipe laughs, says "Tea," and we hear the opening notes of the song

I don't recall this (and I heard that song a zillion times back in the day) - will have to revisit...

It's at the very end!

He giggles like a little kid.

Love the little chuckle Elvis does near the end of "Baby Let's play house" where he cracks up over the repeated bbbb-baby babys

Grand Puba singing Billy Joel and cracking up at the end of his verse on Feels So Good.