Green’s Dictionary of Slang

scooby v.

[rhy. sl.; scooby-doo = screw v. (2b); ult. TV cartoon character Scooby-Doo]

to defeat, to trounce, to outwit.

1993		I. Welsh Trainspotting 28: That scoobies the cunt.
2018		I. Welsh Dead Man’s Trousers [13]: That scoobies the cunt.