So, one weird thing about parasocial relationships is that people feel familiar enough to make what seems to them to be fun, teasing comments with their Internet pal.
For the person on the other side of the relationship, it's yet another rando with anger issues coming out of the aether to ruin their day.
Don't pretend to be someone you're not -- an angry person, a stupid person -- with people who don't know who you are. They can't tell that you're pretending, and will take you at face value.