A variation of the military and law enforcement term "ate up", which is a military term used to express someone's uselessness and inability to perform any task.

Also used to express a pointless or chaotic situation such as an unorganized task where nobody knows what they should be doing.

Finally, it is used to describe a hopeless situation.
example#1-Bob: "Hey, I heard Kevin could not score a 280 on the pistol course."

Fred: "Yeah- he's more 8 up than a soup sandwich".

example#2: Bob: "They want us to complete this assignment by next week, but no one knows who is supposed to be doing what"

Fred: "yeah, that's 8 up"

Example#3: Bob: "Dude, we are stuck in the middle of the desert, and I just ran out of water".

Fred: "yeah, this is 8 the fuck up"
by shitbagger August 26, 2007
A term used throughout Florida in the rave scene in the 1990's and early to mid aughts, and still perhaps today, to describe someone who has been rolling or candy-flipping all night and is burned out or fried. Lack of serotonin and mild depression may be associated.
Ah man I'm too 8 up to do anything today.
by TampaRave96 May 13, 2015
From the WWII era meaning Section 8, a category of military discharge. Service members were deemed "Section 8" if they were mentally unfit for service. This included being found guilty for sexualal perversion. In modern times it is used to describe a soldier or piece of equipment that doesn't perform or present to military standard.
DS Slaughter- "PVT Snuffy, you failed to shoot at least one of the 40 targets with your rifle. Why are you so 8 up?"

PVT Snuffy- "Drill Seregent, I'm not 8 up, it's my rifle. It has been jamming and double feeding all day."

DS Slaughter- "You are still 8 up for failing to conduct proper maintenance of your weapon PVT! Your weapon will function properly of it is clean and lubricated!"
by boardkiller June 26, 2011
A shot followed by a chaser of the popular soft drink 7-up. (Alcohol) in general.
"Liz, if you do another 8-up you're gonna go all boogidy on us!"
by Elaine West May 20, 2007
Means you be pullin hella buff men
Jacob be pullin hella buff men with 8 fingers up
by UrbanDale April 18, 2022
very very loyal to 1 person and has genuine feelings
damn he got 8 fingers up he/she must be super loyal and has genuine feelings no cap
by ilikeheronly<3 August 5, 2022
You are a broke ass retard who gets zero pussy and smells like fresh dog shit.
Did you see Todds new Instagram post holding 8 fingers up? What a fucking loser.
by Phatpnis May 24, 2022