@Nath42
Sorry, I have no interest in doing it to you.
I'll describe the process, if you like.
In hospitals, a catheter is generally only put into you can't pee n your own, or before a long procedure like surgery. If it's because you can't pee for some reason, such as Post Operative Urinary Retention or being bedridden and have a lot of poo in your rectum, their first step will likely be an ultrasound ‘bladder scan’ to see how much pee is in your bladder Usually you have to have about 600ml or more fr a catheter to be ordered.
A catheter an be a simple in-and-out, also called a ‘straight’ catheter or an indwelling one, with a retention balloon, called a Foley. The procedure is essentially the same.
To put in a Foley, a ‘catheter insertion kit’ is usually used. This contains all the stuff needed for a sterile insertion. They can be bought on-line.
The nurse opens the kit and the inner wrapping becomes a sterile field for the insertion. She then puts n the sterile gloves, being careful not to contaminate them. She will then take hold of the person's penis and carefully wipe the head with disinfectant wipes or swabs several times. The catheter comes in a sterile envelope which is opened ant the insertion end lubricated with sterile K-Y for the first few inches. Alternately, a small syringe of the sterile gel lube can be injected into the urethra. I personally prefer this option because it makes insertion a lot more comfortable. I never use a gel with an anesthetic agent. Pain is a warning.
These things done, the nurse holds the penis with one hand an inserts the catheter tip into the recipients penis and advances it. This feels a bit strange and is hugely embarrassing but should not be more that mildly uncomfortable. en the catheter is in abut 8 to 10 inches, it'll reach your prostate, there will probably be some resistance The nurse should pause about 30 seconds, to allow muscle relaxation, then proceed. This part an be a bit ouchie. The catheter is advanced until pee flow can be seen, and then advanced a couple of inches further to get well into the bladder.
At this point if it's a straight catheter, it's done. If it's a Foley, the balloon is inflated w/ 10ml or 30ml of sterile water and the catheter is pulled back so the retention balloon is against the bladder wall. The catheter is then connected t the pee bag, if not connected before.
And you're done. You now have absolutely no control of peeing. Absolutely none.