S10E5: Back to the Pilot
PAST BRIAN: Whoa, ass ahoy. All right, let's go.
PAST BRIAN: Hey, Peter, it's 7:00 and you've still got your pants on.
Oh, yeah, that's right. We were just here.
BRIAN: Wait! STEWIE: Wait!
Who the devil are you? We're from the future.
So are we. We're from the further future.
- We came to stop you.
What they did actually turns out to be damage-free.