Hello Australia Speaking only generally, and certainly not for any individual, during a neurological examination, it can mean that the patient is embellishing their weakness. This doesn't mean it's not there.

Sometimes, in pure frustration, a patient may be doing really well when they hit the neuro's office, and so, they try to duplicate the weaknesses. A patient may not realize they are doing that. When a neuro asks us to apply pressure with, say, our leg against his hand, h/she is watching the response of other muscles, and more often than not, the patient doesn't realize this.
You are not alone. This goes on, all...the...time. It's normal.

Trying to do your very best--make every effort at the examination--is the best route to diagnosis.