It's that day again, although a little later than usual... I slept late... no excuses.

So anyway, on the weekend teaser. Last week's experiment seemed to work well enough, so I'll follow the same format thi week too. Just to remind you, no pointers from me about right or wrong answers... :no:

Here it is...

Something for the Weekend No. 28

...but what is it?

Happy guessing! :)