pinch for
1. To steal something, especially something small in size or amount, on behalf of someone else. A noun or pronoun is used between "pinch" and "for." See if you can pinch a chocolate bar for me while you're in the gas station.
2. To arrest someone for committing some crime. A noun or pronoun is used between "pinch" and "for." They pinched him for stealing cigarettes from the convenience store.
pinch someone for something
Sl. to arrest someone for something. The cops pinched Max for driving without a license. Max was pinched for speeding.