On the internet, the two magic gateway words to porn.
Clicking a button or link that says "I agree" will let you enter a porn website under whatever conditions that you have "agreed" to (e.g. you are 18 or older).
It is supposed to be a
deterrent to prevent minors from accessing pornography, often using scary-sounding words like "
attest" and "
perjury". But, like in the example below, it's rarely effective.