The other kids 'ragged' [='teased, razzed'] him for having a crush on the teacher.
The other kids were always 'ragging on' me because I wasn't good at sports.
a homeless person wearing 'rags' = a homeless person (dressed) 'in rags'
(..) Find another way. Hold on. Glass... Hugh... ...I'm sorry, I'm sorry. Plant that rag over his eyes mr bridger. - What? - Sir, I can't. Plant that rag over his eyes. - What, wait. - Sorry Hugh. - Wait. Sir, I can't do that. - How do we get back without him? - He's the only one who knows the way. - He can't go any further. Wave that rag over his eyes. - Wait. Sir, I can't. Wait, you can't ... Put a rag over his eyes. Lay it over his eyes. (..)2015 The Revenant