one who always eats other people's food. a true slagnon will never offer to pay for the food or ask unless caught in the act of sustenance theft. they grumble when they're chastised for their behavior but show no remorse or intention of changing their ways, only a hunger that is unsatisfied.
"hey man, where's the rest of my pizza?"
'i think pat ate it.'
"gosh i'm freaking sick of him eating my food! I think i hate that furry coward. Such an effin a-hole!"
'you're right. he's a slagnon'