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general::
Phrase(s): fall over backwards (to do something) [and] 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. • The teacher bent over backwards to help the students understand. • You don’t have to lean over backwards to get me to help. Just ask.
McGrawhill's American Idioms And Phrasal Verbs