Gauging out
After a hit of heroin the user will often gauge out. Also known as nodding. Its where you can't stay awake or keep your head up. You'll keep nodding
I almost crashed my car as I started gauging out whilst I was driving
gauging my eyes out
to stare at something so bad and with such an interest that its hard to get your eyes off of it
Dude I can't help gauging my eyes out at that booty.