I made one myself in my native Dutch language.

The word for ‘rope’ is ‘tauw’, which is pronounced like Tao.

‘ik kan er geen Tauw aan vastknopen’ literally means ‘i can’t tie a knot to it’ but means ‘i don’t understand a thing about it’.

So: ’ Ik kan er geen Tao aan vastknopen’ is kind of a koan.