No, they bite your face off instead. It'd almost be better if the snake said something racist and moved along lol. You know what humans do? They make mistakes, and are often reasonable and have the possibility of changing. Pull the guy aside, he's not a snake.
When I was 5 or 6 I put my hand on a coffee pot warmer because I thought it was a scale. That was a mistake.
Going on a five minute rant against gay people that made (at least) one person very uncomfortable? That's not a mistake. That's creating a hostile work environment.
This is why HR departments exist. Let them evaluate what happened and determine if any guidelines set by the company were broken.
/in all seriousness though, approaching HR with a complaint against a workmate is just as likely to get YOU in trouble and make work for you as it is to actually work in your favour. If you're going to approach HR, please please please do it with a bit of knowledge about how it works in your company, and not just because you believed the spiel they delivered during orientation about being there to serve you. (hint: Unless you're their boss, you are not the one that HR serves).