Basically describes when someone is so high onopiates that it constricts your pupils to tiny pin-points.
The neighborhood junkie kept insisting she was sober but there's no denying she's still using, given that she's pinned out and can't keep her eyes open or stop itching. That junkie is as pinned out as a tweaker is spun.
The current craze in music where an artist electronically alters there voice to sound like it's flucuating and robotic. A phase we will look back on in 10 years and laugh about, questioning how it swept the music world off its feet.