Something that's pure nonsense, stupid, etc. Like nonsensical, but more so. Like, if nonsensical was self-describing.
What are you doing? That's proper nonsentical.
Basically a mazza moment, but the Mazda car company
"Lad, I just got a job"
"That's a Mazda moment"
When something pure mazza happens.
"Lad, I just shegreed this bloke." "Let's go! Fortnite!"
When something sick happens and you exclaim "Let's go!", to which some smart ass or idiot replies "Where?"
"I'm getting paid today"
"Let's go! Where?"