dmvslang.
Used to exaggerate when agreeing/not agreeing with something/someone.
"boi" commonly follows this expression and is often used in sessions of joaning
"Ay u do the homework mrs applebottom assigned?"
"No like shit boutta copy homie that sits in front of us like shit."
An old expression dating back at least to British National Service (1950's) and probably a lot earlier. Possibly for as long as there have been British Armies that supplied blankets.
Was also commonly used in former British Territories and Dominions (Australia etc.) which now form the Commonwealth.
To attach to something very securely.
Also to hang around something or someone very persistently.
"This glue will stick that on the wall like shit to an Army blanket."
"He's stuck to his boss like shit to an Army blanket."
A person pretending to be something they aren't, or an impostor. This is inferred because of the old alien movies where alien pods appear on earth and the "pod people" dispose of the humans and slowly reproduce the bodies, pretending to be humans.
The pod person was pretending to be my father, but I knew that he was an alien when he acted differently than my father ever would have.