Going even more meta than usual, 'Wandavision' just took the Marvel Cinematic Universe back to '90s sitcom days. Rad, right?

The fanbase is flipping out over a few aspects of the very special episode that dropped Friday on Disney+. It happens to actually be called 'A Very Special Episode,' and here's what we can say without getting into major spoiler territory.

The References Are Undeniable

If you've been watching 'Wandavision,' you'll know it involves MCU's Scarlet Witch (Elizabeth Olsen) experiencing different eras alongside Vision (Paul Bettany). The theme songs in these episodes reflect their particular eras, and this time, the theme song was basically right out of 'Full House.'

It seems to include obvious winks to the '90s sitcom by featuring young twins and a shot of the main characters' family sharing a picnic in front of white and pastel architecture. Remember that part of the 'Full House' intro? 'Wandavision' fans do!

Yes, She's One of THOSE Olsens

This is extra special because of Elizabeth's connection to Michelle Tanner herself. For lots of viewers, it took a 'Full House' era episode to learn that Scarlet Witch is indeed related to the Olsen twins.

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Fans Who Got It? They Loved It

Twitter is popping off with 'Wandavision' viewers who can't get enough of the cheeky cultural crossover. Their opinions include a lot of cute comparison screenshots and baby Olsen gifs - so really, everybody is winning here.

Can someone visit adult Mary-Kate and Ashley in their fashion lair and ask what they think of it all? We're dying to know.

NEXT: Here's Why Disney Is Spending Up To $200 Million For WandaVision