Babestation's on-screen warning

I noticed Babestation's onscreen warning for the first time tonight, but was a little puzzled by something. After the warning about the show being for over 18s only we get a little intro, during which there are three icons in the top right of the screen. One is two feet interlocked (representing sex); one is a face shouting (bad language) and the other is the number 16. What does the 16 represent? I've seen these same three icons on sexysat (fta liveshow available on the hotbird satellite) and always presumed it meant the show was suitable for over 16s, but if that's the case, why do Babestation put up the 'over 18s only' warning beforehand?

I wondered that exact same thing too...
Seems to be something to do with Dutch viewers???
Remembering that Babestation is partly based in the Netherlands and consequently can have a Dutch licence.