Suddenly frightened of my bed? Never acted like this before...

He's honestly never acted in such a way. This is the first time. Just today, I was holding him on my bed after I had just woken up. Then, all of a sudden, he bolts out of my arms, scratching my chin, and slams himself into my wall, and runs out of my room. It was odd, because all I was doing was laying there silently, and he was relaxing. Now, for a while I picked him up in my arms, and brought him over to my bed, just to test if he was alright now. But he started squirming, and ran out of my arms, once again, running away from my bed?! He was never like this before, he would always take a nap on my bed, and come onto it when I was on it. He isn't afraid of my bedroom, but he avoids the bed. He started tapping stuff on my floor, and tapping my mattress like he didn't know what it was. Would anyone know what would cause his sudden fright? (It has nothing to do with my bedsheets or anything. It's the same sheets and covers that he would rest on.)

He's walking around my room casually like there's no problem. I have no idea why it's just my bed that he's completely avoiding at all costs. :/

Sounds like he probably just got spooked while on your bed and now is wary of it. This will probably go away quickly after he sees nothing bad happens on the bed. If you want to help him get over it you can associate the bed with good things. Give him treats and praise near it and on it. Don't force him near it because that's likely to make it worse for him. I can't think of any other problem he could have with it, but if he doesn't get over it after a while you might need to investigate further.