MIND BLOWING?

[Picture of Shawlands arcade community noticeboard notice about mind blowing prices]IF MY MIND DOES NOT “BLOW”, is this a breach of the Trades Descriptions Act?

The sign on the community notice board inside Shawlands Shopping Centre states:

 

“THE KIOSK
Now Open
Bigger & Better
than before
More variety
At prices that are
MIND BLOWING”

Please click on the picture to enlarge.

This also begs the questions (1) is a “mind blowing price” cheap or expensive? Good or bad? and (2) Is having one’s mind blown something one ought to desire?