Definition of mind-blown in English:

mind-blown

Pronunciation /ˈmʌɪn(d)ˌbləʊn/

adjective

informal
  • Amazed, astounded, mentally overwhelmed; mentally exhausted (especially as a result of drug use).

Origin

1960s; earliest use found in Time. From mind + blown, after mind-blowing or to blow (a person's) mind.