Sorry for the lengthy delay in my update here, but to be honest I forgot that I made this thread here.
Anyways, not only did I do the idea of taking the toilet apart when I changed the wax seal, but my boy and I sat and watched a show on TV where they explained how toilets are made and how they work. Forget what the show was called, but is was on Discovery Channel. Anyways, after he figured out that the toilet is not some monster puking water all over the place, he got over his fear literally instantly.
While I was happy about it, it started to make me aware of another problem. Our house only has one bathroom and yet we have 3 kids. My youngest is the priority when it comes to bathroom usage due to him just getting over potty training and him being the most likely to have an accident if not careful. My little brother is 15 so obviously if the bathroom is in use he can always either go outside or at a friend or girlfriend's house. Now the problem is with my oldest boy who's 7. He hasn't had an accident in awhile, but he has come extremely close several times all because the bathroom has been in use or because my youngest needed to use it. My oldest does understand why his little brother has the priority, but I just feel like he's not too happy about it. I have on a few occasions sensed a bit of sibling jealousy coming from his end, but I didn't say anything. I have heard from other parents with multiple kids that it's not uncommon for a kid in my oldest boy's position to want to start regressing back to being a baby again to try and get all the attention again. I really haven't let that worry me at all because even though I noticed signs of jealousy, I haven't noticed any sign that he wants attention.
Anyways, if anyone has advice on how to be a little more organized with the bathroom drama, then please share.