What's the name of that reggae song that goes "I know and you know too there's a reason for the things we do"?

Question

It was in the movie Kingpin with Woody Harrelson.

Answer 1

Here's the track list

1. She Came On - Super Deluxe
2. But Anyway - Blues Traveler
3. Save It For Later - English Beat
4. Superman - Goldfinger
5. Ooh La La - Red Eye
6. Disco Inferno - The Trammps
7. Surely (I Love You) - Colin James And The Little Big Band
8. Miss Fabulous - Jono Manson Band
9. Soon Enough - Josh Clayton-Felt
10. This Perfect World - Freedy Johnston
11. I Saw The Light - Todd Rundgren
12. We Should Always Be Together - Billy Goodrum

All but three have the lyrics linked here:

http://www.stlyrics.com/k/kingpin.htm

None seem to be you song though -- must be part of one of the other 3 -- Ah, well, at least that narrows it down for you