tie into knots

Idioms  

1. Confuse, upset, or bewilder, as in He tied himself into knots when he tried to explain how the engine works. This metaphoric idiom transfers a knotted tangle to mental confusion. [Late 1800s]

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Example Sentences

A thinner rope would have been adequate, but the beefiness of the heavier rope offered the look she was after, although it is too thick to tie into knots.

From Forbes

Jill had an awfully decent pink sort of thing on, and it had rows of fringe that you could tie into knots without her rotting you for doing it.

From Project Gutenberg