Both of those are common things to have happen on trips. At least you weren't my old roommate who on his first high dose shroom trip got stuck in a four hour freak out thinking he might be gay, but he really hates dude, but what if he's gay anyway? Should he suck a cock? In front of some of his less than tolerant small town Montana friends.
As for hearing people talk shit about you, or just taking jokes badly I've had both of those myself, and watched it in others. Which is why folks really shouldn't shit talk around folks who are tripping good or bad.
I bet dude who sat down on your bed was just getting the creeps from the light and the computer noise, and then sat down in the obvious spot, but who knows, maybe just ask him about that?
Most of what it sounds like you went through is why I normally trip by myself or with one other close and longtime friend these days.