There's an App for that...Free Beer

Normally, when I see the telltale sign of FWD:>> FWD>>> FWD>>> in the subject line of an email, it's delete and move on, however... one that had also contained two additional words:  free beer -- was somewhat intriguing.

I was certainly entertained by the show that opened up in front of my eyes on my desktop.

I wonder how they did that?  After a time pondering and a second time watching...

IT MUST BE THE COASTERS.  

What else could it be?   Cheers to Simon Pierro, and for Munich's famous Hofbraeuhaus pub, for playing along!

Enjoy!