Jacket cover the ratchet, pants hang to my calf
Burner over the ab,
The words “ratchet” and “burner” are slang terms for “gun”. Q is concealing a gun with his jacket and he has a gun in his waistband, covering his abdomen. Like so.
“Pants hang down to my calf” probably means he is wearing shorts or khakis that have been trimmed and extend to the calf muscle.
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