Family Guy has been on the air for twelve seasons, spread out across fifteen years, and that means we've seen a lot of the Griffins.A lot of fighting. A lot of joy. A lot of boner jokes. And a lot of time travel.

And yet, Stewie's trip into the past -- and the alternate present -- on Family Guy Season 12 Episode 21 still held some surprises, and raised some interesting questions.

Like: is life in the British aristocracy all it's cracked up to be?

Can you use a time machine to undo the circumstances of your own birth?

And most importantly: if you donate porn to the Salvation Army, can you write it off on your taxes?

Learn the answers to these tantalizing questions and more, my friends, when you watch Family Guy online.

But also, you can't write off the porn donations. Don't ask me how I know, I just do, okay?

Watch Family Guy Season 12 Episode 21 Online