Twist someone's arm —说服别人
Twist是拧，用力扭转的意思。一个人要是给别人把手臂拧到身后去那是很难受的。To twist someone's arm这个习惯用语的意思也正是如此。
注意：twist someone's arm 指给某人施加压力，迫使他做你要他做的事。
1.My son has been twisting my arm to let him take my car out on a date ever since he got his driver's license.
2.I didn't want see that movie about Mozart, but my roomate twisted my arm.