<human>: My gf and I are in our late 20's, been together for 3 years, living together for 1 1/2 years. Lately, she has picked up the annoying habit of laughing in the middle of an argument (usually one that she started) and making me feel like an idiot. For example, today I installed a new light switch in the bathroom since the old one was corroded. It's one of those switches that you press up and down, not the "flip" kind. When she saw this she "flipped" and started ranting about how I made a stupid decision choosing this kind of switch rather than the other. How hard these kind are to clean (wtf? she doesnt clean and how can a flat switch be hard to clean?), etc. When I say rant, more like stomping around flailing her arms toward the switch and yelling at the top of her lungs. When I try to defend my decision or tell her how I'm upset that she gets upset so easily, she'll just start to laugh and tell me to get over it. At this point I'm the one who is mad and she's just standing their smiling and rolling her eyes. I don't know what this means. Is she looking down on me? Does she not respect me? Is she just pushing my buttons? Because, it sure feels that way. Am I the one who just needs to get over it?

Give me the gist of the text in a nutshell
<bot>: GF laughs in the middle of arguments. I feel disrespected and angry. Do I just need to get over the argument or is she manipulating me emotionally?