Sittin' on the street corner drinkin' Mickey's or a forty of Cobra....
No doubt you are correct in how the name came to be.
When I was younger I was in a gang called “The Shamrock Stealers”.
Based on one of the first things we shop-lifted - a silver necklace.
Well, silver colored anyway. Came in one of those plastic bubble things sitting near the check-out at the local 5 & dime store. Me and my buddy (okay, a small gang) were in the third grade.