blow someone's brains out

present singular third person blows someone's brains out · participle present blowing someone's brains out · past blew someone's brains out · participle past blown someone's brains out

1. slangTo shoot someone in the head.

   Start dancing and I'll blow your brains out!

   1994 Mike Werb, The Mask, Lt. Kellerway (played by Peter Riegert)

   5 more examples

   [F]or Moody, on this Occaſion, took a large Glaſs from him, and threatned to blow his Brains out, (a favourite Phraſe with theſe Pyrates) if he muttered at it.

   1724, Charles Johnson [pseudonym], “Of Captain Bartho[lomew] Roberts, and His Crew”, in A General History of the Pyrates, […], 2nd edition, London: Printed for, and sold by T. Warner, […], →OCLC, page 319

   In Conſequence of this a profound Silence enſued, the Earl depending on his Skill in the Sword, longing to run the Baronet through the Body; and Sir Timothy, knowing himſelf a good Shot, to blow the Earl’s Brains out.

   1763, John Shebbeare, Lydia, or Filial Piety: A Novel, volume 3, page 66

   Sir James Wallace pulls out a piſtol from his pocket and cocks it, and ſays, if you ſpeak to me I will blow your brains out immediately

   1783, The Trial of Lieutenant Charles Bourne, Upon the Prosecution of Sir James Wallace, Knt. for an Assault, page 54

   “One more step, Mr. Hands,” said I, “and I’ll blow your brains out!

   1881–1882, Robert Louis Stevenson, Treasure Island, London; Paris: Cassell & Company, published 14 November 1883, →OCLC

   He’d probably blow his brains out a week after the fact, but that might be a little late for the rest of us.

   1988, Tom Clancy, The Cardinal of the Kremlin, page 540

2. idiomaticvulgarTo perform fellatio on another person, as to give them an orgasmic experience.

   Synonyms: give head