People are so impatient with learners

I've just started taking driving lessons and some people can be so impatient, I'm on my second driving lesson and so far I've had multiple cars honk at me whilst my instructor is explaining something and I'm taking my time at a turn or something.

There's a big red sign at the top of the car too, it's obvious there's someone in the car that's a learner.

I had a guy pull up beside me, mouthed something and then drove off. I don't let it get to me of course but this could affect other learners a lot more.

Remember you were once a learner too.