Definition of bitch-slap in English:

bitch-slap

verb

US
informal
  • [with object] Deliver a stinging blow to (someone), typically in order to humiliate them.

    ‘I'd bitch-slap her too if she mouthed off to me like that’
    • ‘And one of the reasons for that is the fun of seeing the guy verbally bitch-slap reporters like Dana - just by refusing to give anything but straight answers to stupid questions.’
    • ‘I've never been bitch-slapped twice on the same night before - it was a quite new experience for me.’
    • ‘Brett looked like he'd just been bitch-slapped.’
    • ‘I will always be your delinquent friend ready to bitch-slap anyone who messes with you.’
    • ‘Yeah, I know, I probably deserve to be bitch-slapped, so quit shaking your head and waving your finger at me.’
    • ‘‘He just bitch-slaps her, basically,’ says Barclay, laughing.’
    • ‘I have to say I am enjoying the media elite getting bitch-slapped around by the American people over the movie The Passion.’
    • ‘I want to find the punks that do it and bitch-slap them.’
    • ‘Unless you count a minor moment where our kingpin bitch-slaps the husband of a girl he's pining for, we never see Pipe actually apply his power.’
    • ‘I think he thought I was going to bitch-slap him or something.’

Origin

1990s: originally black English, referring to a woman hitting or haranguing her male partner.