system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: On a site like Pornhub, what happens if you watch a video that contains underaged content without your knowledge?
gpt
No - you the viewer are not liable for someone (the content poster) lying to someone else (PornHub) and them lying to you.  Now if you click a video that says "17 year old slut takes one in the ass"... you would be liable because you are knowingly consuming child pornography.

But if someone claiming to be 18 is featured in a video and is only 17 that is PornHub's problem... not yours.