"mind-blowing"

This is an interesting word.
Of course I knew its meaning,
but I didn't notice this word until I heard someone say:
"When I first came to America, everything was mind-blowing".
After that, I myself used this word for a couple of times.
Typically, the sentence would be:
"The first few weeks of life in the US was" (pause) "mind-blowing".
And then I will most likely receive a great appreciative response...

It works like a charm.