Make Robin The Mother
…and that would be making Robin the mother.
There are still online theorists who want to insist that Robin is the mother. Despite the fact we know the kids refer to her as Aunt Robin. Despite the fact she can’t have kids. Despite the fact it would be absolutely ridiculous in every way possible. Some people just insist on insisting that Robin will still, by some stroke of fate, be the mother.
I’m making this a separate page from the previous one since I could actually see them throwing in the twists of all twists and making Robin the mother. Yes, it would go against everything we’ve seen so far in the show, and everything they’ve indicated, but they could always give some bogus explanation like Ted was deceiving his kids the whole time, trying to keep some suspense in the story. He could have even told the entire story with a different name so they wouldn’t know he was talking about their mom. Basically anything is a possibility with the way the show is set up, and that’s been the source of its strength so many times, but in the wrong hands, it could certainly be its downfall. With great power comes great responsibility. Please don’t abuse that by making AUNT Robin the mother.