FALL OVER BACKWARDS (TO DO SOMETHING)
fall over backwards (to do something): translation
fall over backwards (to do something) & bend over backwards (to do something) & lean over backwards (to do something)
Fig. to do everything possible to please someone. •
The taxi driver fell over backwards to be helpful.
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The teacher bent over backwards to help the students understand.
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You don't have to lean over backwards to get me to help. Just ask.