Uncomfortable.

Day three: Things that make you uncomfortable.
Not much makes me feel uncomfortable but those that do really make me squirm. 
1. Watching people embarrass themselves or at least me feeling embarrassed for them. I hate people being embarrassed, whether by themselves or someone else. I think humiliating someone for laughs is a low form of comedy and in some cases it could be bullying.  2. Sex scenes in books. I don't have a problem with other people reading or writing them but I'm not a fan. I refuse to read 50 Shades, not purely based on the sex scenes but also because of the apparent shocking writing. 

Source.

That is about it, they're the big ones. I'm sure more things make me feel uncomfortable like trying to hold in a fart but the squirm is bigger for the two I've listed. Unless it's a huge fart.