Don’t try what ralph124c recommends. I’m sure they could nail you on a contempt of court-type of charge, as I would be willing to bet many a jerk has pulled that kind of stunt before.
Now, that being said, I was called for jury duty once, and was dismissed as a potential juror. The way it works/worked at the time in Illinois (or the particular county in question) was that you wear a tag with a number, which you get when you check in. During the check-in, you fill out a form that asks about all sorts of stuff, including if you’re friends with/related to any police, lawyers, etc. You hang around a lounge all day, and go with the other juror candidates to lunch in the cafeteria. If they call your name, you go into a courtroom and see if you get questioned and possibly picked. If you’re not picked, you go back to the room and wait. If by the end of the day you’re not selected, you go home and don’t have to return until you’re summoned again. Check carefully to see what the situation is in your area, as this may well be different.
My number was called part way through the day, so I went with a bunch of other people to a courtroom. The case was about some sort of car accident, with one person claiming injuries that required chiropractor work and so forth. Both sides were there, both lawyers and (IIRC, though my memory is hazy on this) clients. They called up four people at a time, and those people sat in the jury box’s front row. They were questioned one at a time by each lawyer, and either accepted by both lawyers, or rejected by one or the other lawyer. When those four were done, another four people were called up, until the jury plus alternates was picked, then everyone not chosen/not called up at all returned to the lounge area.
I was called up, and one of the lawyers asked about my noting that I have a sister-in-law for a lawyer. I mentioned that she’s a lawyer for a HMO - that seemed to stir some interest but I couldn’t tell if it was positive or negative. Another question was if I interacted with doctors frequently, and I said yes because I worked in a cardiology office and doctors were my bosses. A follow-up question was if they often discussed medical matters with me, and they did all the time so I said that. I was also asked what my opinion of chiropractors is, and I said that while they can probably do some good for certain spinal conditions, some of them seemed to offer things way outside of their practice, as I think them helping for stuff like colds and so forth isn’t supported by any decent scientific evidence. The lawyer for the client who had gone to a chiropractor indicated that he didn’t want me on the jury, and I was asked by the judge to be seated back in the “audience” area where the other candidates were. Eventually they filled the jury, and I returned to the lounge, and didn’t get called up in the remaining time that day.