The context of the following conversation is After Austin acted like a jerk, Sydney read him the riot act for farting and knocking over the plant.:
Sydney says I totally read the riot act this weekend to Austin..
The friend responds Austin can be such a jerk.  What did he do this time?.
Sydney responds He farted on me!.
The friend responds That is so gross, oh my god..
Sydney responds As if that wasn't enough, he knocked the hall plant over and broke the container..
The friend responds Wow, what a jerk! I would be so mad at him too..