Question

you can’t teach an old dog new tricks My grandmother will never use a laptop. You can’t teach an old dog new tricks.

Accepted Answer

This expression means that someone who is used to doing things in a certain way will find it difficult to change their habits.

Phrase/Idiom	you can’t teach an old dog new tricks
Definition	This expression means that someone who is used to doing things in a certain way will find it difficult to change their habits.
Example	My grandmother will never use a laptop. You can’t teach an old dog new tricks.

Can’t Teach Dog Tricks Expression Means Things Find