A woman who gives sexual favors in exchange for
bags of recyclables, most commonly aluminium
cans. The term originated near the scrapyards in WW2, when women would use these favors to encourage others to pitch-in on the War
effort.
"I was taking my cans down to
scrap for beer money, when i ran into an Aluminium
Slag.
Ten minutes later she had my cans and i needed a wet-nap!