Well, I'll add to these over time, but off the top of my head, my sister is a confirmed LSI, and she has a terrible habit of making abrupt comments to complete strangers who annoy her.

For example.

When we're out shopping in a crowded mall, she will practically bulldoze her way through the crowd, telling people to "move it", lol. I'm usually the one apologising profusely in her wake.

I took her to see Avatar the other day. About 10 minutes into the movie, some fat guy and his 5 kids showed up late and were taking their time looking for their seats in the row in directly in front of us. My annoyed sister sharply told them to shut up and sit down, lolll.

Gotta love her.