One who constantly has ratchets hanging off of him. A ratchet strap can have several motives. A ratchet strap brings ratchets places to appear cool. A ratchet strap could be too nice to say no to ratchet advances. A ratchet strap could be a ratchet themselves. In rare cases, a woman can be a ratchet strap such as; when a girl tags ratchets along to appear better looking herself; or when she just rides for a crew of ratchets.
"Yo, you see Paul rollin up to the party with Rachael?"
"Yeah man she's disgusting. He's such a ratchet strap"
"I know, why does he even take her in public?"
"Oh my god, she is such a ratchet strap!"
"She chills with fuckin RACHAEL!"
"She clearly only keeps Rachael around to make herself feel better about herself"
"That's true, Rachael is pretty fuckin ratchet."