Variant of "mad skills", used by someone who has just pulled off something intensely difficult or seemingly impossible -- by way of their immense skills at the task.

Got the covid-19 vaccine

Extreme amount of skill in a specific area.

Normally affiliated with the stoner culture. If someone is hardcore you could say that they have 'madskillz'.

the ability to do something so extremely well that it creates a state of mental illness; expertise that reaches a point of insanity where even simple things like spelling words correctly is impossible.

when someone who is over cocky thinks that he/she are the damn best at everything uses this word to define that they have great talent

Haveing skills that are more then just average... Madskillz, a person who continusly does things to amaze you, people that may not know this person may think that the things this person does are fluke, but you kno that this person just has Madskillz in pointless tasks, this person also might have Madskillz in meaningful tasks such as, Street Hockey, Drinking, Checkers, Sega Genisus, Finding and Buying Sweet Shirts, Highly Sexual Activities, and things of that nature.