To swing a combination of 3 punches, alternating from your left hand to your right, scoring a KO with the third.
John: Danny was being a cheeky cunt last night.
Mark: Oh yeah I heard, didn't you end up knocking him out?
John: Yeah, gave him the left right goodnight.
Mark: Solid cunt.
by BanterWagonn March 3, 2014
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When ur in a fight and you jab cross hook/uppercut and knock them out mostly and Aussie fight term
(some blockes watching a MMA fight and one of the boxers gets knocked out)

Holy shit cunt he just gave him the left right goodnight
by Walley34 June 24, 2018
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To go up to your enemy in a club and bang their left cheek, right cheek. Then as they are collapsing you give them a big old headbut (nut). DO NOT UNDER ANY CIRCUMSTANCES EJACULATE (nut) ON THEM (whilst conscious).
Sam : Hey Franklin!

Franklin : Oh hey Sam!

Sam : Where's that money you owe me?

Franklin : Fuck your money.

Sam : *Performs Left Right Goodnight, Nut whilst shouting* Left Right Goodnight, Nut.
by samandizzy'ssweetanalysis December 9, 2019
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After you finish in a beour, so you knock her out so that she doesn’t remember that your the daddy afterwards
The condom broke last night, so I gave her the left right goodnight - R.B.
by Dunburn123 December 21, 2020
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