bang up v.1
to inject a narcotic drug.
|You Can’t Win (2000) 134: You’re in with what ‘gow’ I’ve got. Let’s bang it up before they come and take it away from us.|
|Candy 4: She watched me bang up a few times.|
|Get Your Cock Out 41: Mincey pardoned himself and banged himself up in his left eyeball.|
|(con. 1980s) Skagboys 59: Iver done the skag before? [...] Ah mean, banged up?|