Gakked Out 

Being high as fuck on cocaine.

My nigga Angelo was gakked out at school.

Gakked Out by Ben Sherman October 25, 2016

Gacked out 

Gone Wacked

A person who is high on drugs and don't even know what they are doing or who they are. Totally gone, wacked out. They are gacked out.

Gacked out by Mthuckleberry April 4, 2019

gacked out 

To be real real real high, on meth, crack, PCP or whatever gets you fuzzy!

I was nekkid gacked out and shootin' at the cops.
I acquired all this copper wire when I were gacked out!
That bitch is gacked the fuck out!

gacked out by rusty squeezebox June 14, 2008

Gacked Out 

The be extremely high on stimulants such as cocaine, amphetamines, or MDMA. To the point of engaging in noticeably stereotypic behavior.

Ryan was so gacked out on Molly all he did for the DJ’s entire set was rub his sweaty chest and shuffle around with his mouth hanging open.

Gacked Out by Dr Raoul D May 1, 2018

Gacked out on whoop chicken 

To be extremely under the influence of meth-amphetamines.. AKA tweaking balls.

He's so high, he's gacked out on whoop chicken!

Gacked out on whoop chicken by LegionAK March 17, 2020