The plausible in this video is that it's physically possible to go through something such as a mirror. Whats impossible is you don't just hover through it as if your a ghost.

The plausible is it is possible to strect yourself to appears larger but it is impossible to triple your size within seconds

 

 

in this one it is plausible to dance but it is impossible for an object such a a card to get human features and began to dance