Scran Bag 

This can be used in a couple of different ways, but typically refers to someone who is always hungry or extremely greedy and is always eating. The expression originated with the Royal Navy where the slang name for food is scran. It can also be used to refer to a person who is dirty, untidy, unkempt or of unprepossessing appearance, this too originated with the Royal Navy, perhaps because people who were always eating changed shape so that their uniforms did not fit or were so intent on food that they neglected their appearance.

“If eating was an Olympic sport, you’d be a gold medallist you scran bag!”
“Look at that scruffy sod! What a scran bag!”

Scran Bag by AKACroatalin May 21, 2015

scrag bag 

1) refering to a dirty scrotum,
can also be used as a label for a dirty person

goddamn take a shower you scrag bag

scrag bag by bastardfins December 27, 2006

Scrag Bag 

A scruffy and unkempt person.

“he walked out of the house with a wrinkled shirt and messy hair, looking like a scrag bag.”

Scrag Bag by Sunflower555 December 20, 2023

Scranbag 

Someone who is completely disorganised and is very scruffy in appearance.

Man, I'm fed up of that guy never getting to work on time. He always looks like he's been dragged through a sewer and then pissed on by a dozen tramps. He's just a shitty little scranbag!

Scranbag by The Minge September 28, 2008