Hi, Mishetta!
It stings for a few seconds, but it isn't really painful as long as the scissors are sharp and you do it quickly. I just make sure I have a cold, wet washcloth to hold against it for about 30 seconds (how long it takes to stop bleeding), put a dot of antibiotic ointment on it and then go on to the next one. If they are not really tags (with a stem), then I let the doctor take care of them because they will need to be taken off with a scalpel. The smaller they are, the easier they are to take care of, so I mostly take care of them right away when I notice them.