Green’s Dictionary of Slang

1. of a drug, to make someone very intoxicated.

1999		J. Baker Walking With Ghosts (2000) 83: You’ll take it away and give me a weight of Nepalese temple balls that’s guaranteed to blow my mind.
2000		N. Griffiths Grits 86: Cut with crushed up dexies, Col says. — Blow yer fuckin mind, or what’s lefter the bastard.

2. (also blow someone’s head off) to shock, to surprise, to amaze; thus mind-blown, emotionally shattered.

1965		L.A. Times 2 Nov. A1: The clothing makes me feel free and I dig blowing people’s minds (upsetting people).
1973		D. Goines Street Players 55: It would blow your mind.
1977		(con. 1969) M. Herr Dispatches 257: A reporter friend looking totally mind-blown, he woke up that morning and heard two Marines lying next to him making love.
1981		J. Wambaugh Glitter Dome (1982) 63: Imagine what everyone would say if he helped solve the murder [...] It’d blow their minds. It blew his mind just thinking about it.
1992		R.C. Cruz Straight Outta Compton 23: I’d be the first to admit that your momma blew my mind.
1999		Observer Mag. 31 Oct. 19: When I first saw Paul on Top of The Pops with The Jam, his records blew my head off.
2000		T. Udo Vatican Bloodbath 81: Fucken strap yourself the fuck in, boy, cos I’m fucken about to fucken blow your fucken mind!
2003		G. Tate Midnight Lightning 93: It blew our minds when he said that.
2012		L. Berney Whiplash River [ebook] ‘If that doesn’t blow your mind, I don’t know what will’.
2015		L. McInerney Glorious Heresies 211: It was nice to get a welcome home. Blew Ryan’s mind, if he was honest.

3. to drive someone mad, to destroy someone’s powers of reasoning.

1967		John Horton ‘Time and cool people’ in Trans-action 6/1: Street repartee at its best is a lively way of ‘running it down,’ or of ‘jiving’ (attempting to put someone on), trying to ‘blow another person’s mind,’ forcing him to ‘lose his cool’.
1972		D. Claerbaut Black Jargon in White America 58: blow your mind v. 1. to psychologically overwhelm someone: Didn’t I blow your mind?
1980		E. Folb Runnin’ Down Some Lines 230: blow (one’s) mind 1. Manipulate the behavior or feelings of another. 2. Destroy equanimity. 3. Impress. 4. Overwhelm (used in both positive and negative senses).
1998		K. Sampson Awaydays 79: She’s mad. She’s made for Prince Charles or a Tory politician. She’d blow their minds.
2010		A. Steinberg Running the Books 249: I am forced to blow your mind in every sexual way imaginable.

4. in attrib. use of sense 3.

2010

L. Berney Gutshot Straight [ebook] Lucky for Lucy she had a blow-your-mind bod. Long, long legs, riding up to a perfect round ass. [...] Big tits, real ones, just the right amount of give and jiggle.