Help me identify a song lyric

Some background:
The Axis of Awesome is an Australian comedy rock group that has a bit called “4 Chords” where they perform snippets of pop songs sung to the same four chords played over and over. I’m writing a sporcle quiz about it, except there’s one lyric I can’t understand/place. It starts at 3:01 on this video (the one I’m using for the quiz) and at 3:12 on this video.

What the heck is he singing? My guess is that the lyric ends with something like “I think I want her to stay”, which doesn’t turn up anything when I google it.

PS: For the sake of completeness, here’s the studio version, which unfortunately gives away all the answers, so I can’t use it for my sporcle quiz.

A google of the lyrcs says it’s
Self Esteem performed by Offspring?

Edit: you probably know that.

Yeah, sorry about the mix-up; I was looking for the line sung in falsetto(?) right before Self-Esteem starts. Anyway, I changed the quiz into audio only to avoid it. Thanks for your post though!