Yup, that's how it went down. Madonna slipped the tongue to Britney, followed by a little peck for Christina. Download the video if you can find it... it was a great performance even before the tongue tangle.
Back in highschool after school at the gym there the wrestling team would workout, and two of the top guys ont he wrestling team were bigtime mudvayne/slipnot fanatics. Never since have I enjoyed such perfect workout music.
The gym I go to now usually plays alternative stuff which I mostly like, but sucks for lifting to.