ахиллки подрежу

Bad guy says to other bad guy: "А тебе, я ахиллки подрежу." ???

ахиллки - ахиллесово сухожилие Achilles tendon

http://en.wikipedia.org/wiki/Achilles_tendon

ахиллки подрезать = to hamstring (both literally and figuratively).

Of course... I'm watching all these movies about thugs and prisoners and there's so much slang involved! Everything just turns into meta-poetry!