<human>: Context: My fiancee left with our son a year before this incident (date was in September) but still mega-cringeworthy, so I wasn't willing to start dating again. But them short-shorts tho.

I took a girl out to a family movie one Friday evening, this being my first "official" date in about six months, planning to follow it up with dinner. Anyway, some guy keeps laughing from the back of the theater. Not just a chuckle, but big, loud, distracting screams of laughter. People kept turning to glare, but all we could see was darkness.

I can usually keep my cool, but this guy kept interrupting the movie (How to Train Your Dragon 2) with laughter at the funny parts, the sad parts, and the sentimental scenes. Someone nearby whispers, "Is he drunk?" and I assume they're right.

I lost my nerve a while into the flick and ask my date, "What kind of an asshole shows up to a family movie drunk on a Friday night at 7PM?" She agrees and I mutter some more insults over the last half hour of the movie.

When the credits roll, we all turn back to see this drunk jerk in the now-lit seating. I quickly realize he wasn't drunk at all. It was a special-needs group that gets taken out to movies on weekends. The guy that I insulted was wearing a helmet, used a walker, and had a harness that staff would grab onto as he walked.

My date and I don't exchange a word as we reach the lobby, where her sister was waiting for us. But I was too ashamed to follow up with dinner later that evening.

Also, the guy was outside the theater door waiting to be helped onto the van as I exited. He saw me and blurted out, "That's was a good movie, huh?" very loudly. All I could do was nod ferociously as I fled to my car.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Insulting a loud person on a movie date, thinking he was drunk. He actually just had a mental/physical disability.