blow someone's mind

blow (one's) mind

To extremely impress, overwhelm, or excite one. The show of support from everyone just blew my mind. I had really low expectations for that movie, but it totally blew my mind.
See also: blow, mind

blow someone's mind

affect someone very strongly. informal
Blow someone's mind was originally a mid 20th-century expression for the effect of hallucinatory drugs such as LSD.
See also: blow, mind