Basically, you clap and they sing. You can record it.
It’s a viral promo for a guys-oriented Polish virtual mobile provider.
what it says on the pic: Their bums have nothing to do with our current offer, they are here to be clapped. Just clap those bums and hear girls sing.
Edit: dunno how to move thread (it’s a mod thing) so, someone move it to NSFW section
sorz