What do I do advise pls?!?!?!?

Ok, I just woke up and I didn't see my dad so I knocked on his door and tried to open it. But befOre he said he was "getting dressed" I saw him watching porn on his laptop through the crAack in the door before he closed it again! He doesn't know I got a glimpse of what was on the screen but I never saw him(thank god). And one time when I went to work with him and I was showing him my homework and I looked at the computer screen and on of the tabs saI'd danna f**k porn but he quickly exited it out befor he knew I saw it. But I don't know what to do now I feel kind of weirded out and I don't know what to do!