How Do You Get Webpages To Stop Filling In The Title Automatically On Chrome?

well my brother uses my laptop and goes on porn websites. i know to delete the history but it still auto fills in the title of the website and it’s grossing me out. if i like have my laptop at school or s/t and somebody goes on thinking it was me who like typed that that would be really embarassing and i’d be really mad a my brother. can someone help ?
ps i’ve told him to stop going on my laptop but he doesn’t have a computer of his own and i feel bad