tie someone (up) in knots

US /taɪ ˈsʌm.wʌn ʌp ɪn nɑːts/
UK /taɪ ˈsʌm.wʌn ʌp ɪn nɑːts/
"tie someone (up) in knots" picture
1.

confundir a alguien, poner a alguien muy nervioso

to confuse someone or make them feel very worried or anxious

:
The complicated instructions really tied me up in knots.
Las instrucciones complicadas realmente me confundieron.
The thought of the exam is tying her up in knots.
La idea del examen la está poniendo muy nerviosa.