1996 Mojo 15 Sept. n.p.: Syd [Barrett][...] was a terribly nice lad but it [i.e. success] did his brain in.at do someone’s brain in (v.) under brain, n.1
1996 J. Butterworth Mojo II i: potts: Stop pulling my cock. baby: What? potts: You know we ain’t going out, having a party, doing a conga, nothing. We’re staying here.at pull someone’s cock (v.) under cock, n.3