(As this is my first question I apologise if this doesn't fit the guidelines)

To preface my question, I am an Irish 21 year old boy currently on a college work placement. I am working Monday - Friday from 7:30 AM - 5 PM as an RPA Developer and Business Analyst. (To get to my work I also have to drive approx 40 mins to and from work so this adds another hour and 20 mins to my working day) I am also working as a bartender in a local bar Friday night and Saturday night from 8 PM - 3/4 AM every week.

I am currently living at home for the Summer until the college year starts again in 3 months. My issue stems when I arrive home in the evenings from work and go to my bedroom for an hour nap everyday to recharge and be productive for the night. When I get up from my nap and talk to my parents for the first time for the day I generally get a comment along the lines of 
> Oh yeah, here he is again after sleeping at 5 in the evening, tired from sitting in front of a computer typing nothing all day.

This is always a sarcastic comment followed by a chore (cleaning my room, cutting the lawn, taking the dog for a walk) that is given to my as I have "Done nothing all day and it would be good for me"

My issue here is not how can I get my parents to stop giving me chores (I am perfectly okay with the chores) but more to get the negative comments to stop.

I have tried bringing it up that just because they don't understand my job doesn't mean that I do nothing, or the fact that I am sitting down all day working on a computer as it is extremely mentally draining for me.

I have also tried showing them projects I am working on but I am always dismissed with the response 
>But it's easy for you to do computer things because you're good at them 

How can I convey to them that my IT job is mentally draining and that I am not in fact doing nothing all day in a way that they won't just casually dismiss it and continue with the negative comments?