Much worse than the OP, for a long time I thought the lead singer of Green Day and Giovanni Ribisi were brothers. No reason except they looked alike to me. Plus I didn’t know Billie Joe Armstrong’s name. I think it was a few years after Good Riddance came out that I found out they didn’t have the same name nor the same parents.
When did they stop being brothers? 2010 or 2011?
[checks wikipedia…]
Aw, man! So Dean Jagger isn’t Mick’s father? That sucks! 
I did worse.
Donald Faison played Turk on Scrubs.
I started watching The Wire and there was a character named D’Angelo Barksdale on that show. And I noticed there was an actor named Frankie Faison in the cast.
That’s when my brain started working. I noticed that this guy and this guy looked alike. So I assumed Frankie Faison was the name of the actor who played D’Angelo Barksdale and that Donald and Frankie Faison were brothers.
I was wrong. The actor who played D’Angelo is Larry Gilliard. Frankie Faison played another character. And Larry Gilliard and Donald Faison are not related.
But are Frankie and Donald Faison related? Also, I never noticed Donald had a mole on his lip. Or under his nose-- right at booger height.
I would hate myself for not including this:
That’s interesting and all but. . . huh?
It’s not among their best sketches. It looks like the kind of idea someone suggests in the writers’ room and gets mocked for being lame, but then they greenlight it anyway because it’s 11 pm and they want to go home, already.
^ No argument here. The “Free Willy” ending kinda says it all.