When someone undeservingly stumbles upon success, through sheer luck and usually minimal
skill of their own, similar to that of the cartoon character Scooby
Doo who would often
catch the villain by literally stumbling upon them, usually after he had fallen over or been involved in some sort of zany accident.
Person 1: Hey, how'd you go in that
exam?
Person 2:
Dude I got like 95%
Person 1: How? I got like 65% and you told me you didn't even study
Person 2: It's the Scooby
Doo Effect man.