<human>: Can you provide a brief rundown of the text in within 3 sentences?

Today I was at my local shopping centre, and all the cubicles in the bathroom we're taken bar the disabled cubicle. I enter, and really punish the toilet with ten minutes of diarrhea (note: irrelevant to the story). 

Anyway, after this passes and I leave the cubicle, there's a man there with his disabled teenage son in a wheelchair. He is visibly livid, and I awkwardly shuffle past and leave.

I initially felt bad, but then I reflected on it a bit more and I'm not sure if I'm in the wrong. I see those toilets as being specifically developed so those in wheelchairs or with disabilities can operate easier and with more space. They are not confined to to the handicapped, but merely exist to facilitate their problems - not give them a free pass. If explosive  liquid shit is looming, I believe I have every right to use it.
<bot>: Am I wrong in thinking that I have just as much a right to use the handicap toilet as the disabled? Is this opinion misguided? Are there any specific rules regarding them?