Funny thing about Chrome

Yesterday, my colleague showed me something very funny about Chrome, maybe many users have already known it, but it's still new to me.

It's about "incognito window", we can choose it from the control icon dropdown menu.

This is a function of Chrome that it won't save all your browsing or download history. When you open a new incognito window, you will see some message explaining about this mode, the last 2 sentences are very funny.... :D