[Neil Jones]

I'm pretty sure that edit of the "snake charmer" animation is nothing to do with Challenge, and is how the broadcast episode's always been, the uncut version's only ever been shown in outtake programmes. The animation's clearly been re-rendered to make the "clean" version, which shows it was done by the show's production team, Challenge wouldn't be able to do it that neatly by just re-editing the video.

They used to make material especially for the Christmas tape of the ITV companies (and the BBC) back in the day (after they'd filled them up with bloopers/outtakes and Denis Norden and friends had later raided them) and while by 1995 the Christmas tape was beginning to come to an end, its plausible somebody saw the potential to make it a bit ruder and swap out the animation.

So in other words - I feel the "clean" version is what was originally recorded (anything "rude" is what you imply is going on) and the implied rude version was edited later. In my opinion.