My finger is a-shaking on this here trigger."

VOA: special.2009.11.14

You have your handgun out. It's you and the target and your trigger finger and that's all there is."

VOA: standard.2010.04.19

Second, he should have known better than to have his finger on the trigger until being immediately ready to shoot.

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Ms. JUDI DENCH (Actress): (As M): Thanks to your over-developed trigger finger, we have no idea who hired him or why.

NPR: Summary Judgment: 'Fast Food Nation', 'Casino Royale'

The Brazilian Central Bank now has its finger on the trigger.

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