Approx. where our two main characters kill one of the bad guys with seriously strong chili in a McDonalds?

In the background you can hear a female voice singing, but that's all I can say - I've checked the soundtrack and I can't seem to find it, so...help please

Thanks a bunch.

i haven't seen that movie in a long time but i seem to remember the ballad of peter pumpkin head by the crash test dummies being played around that part of the movie but that should be on the soundtrack...

Boy do I feel like an idiot?
I've checked and rechecked those soundtracks and it turns out you were right anyway.

So I found it thanks to you.

If I could find an utterly embarrassed smiley there would be quite a few in this reply.

Thanks a lot!