Gif: THE FUNDIES UNDIES SQUAD! (Patreon)

We see a drab, tired-looking woman hanging up her washing on a clothesline in her backyard.

Female announcer: Need a little spice in your life? A little glamour? A little bit of old-fashioned va-va-voom?

The woman faces the camera eagerly.

Woman: Boy, I'll say!

Announcer: Then you need a visit from the Fundies Undies squad!

We hear a goofy ad jingle ("Every day's a sunny day, in your Fundies Undies!") and a group of pretty young women wearing matching white bras, panties and little hats hops over the fence and into the woman's yard. They surround her until she is lost from sight, and when they step back she has been transformed into a sexpot version of herself wearing silky pink lingerie and stockings.

Woman: Mmm, delicious! Thank you, Fundies Undies squad!

Cut to: A scrawny, bird-like woman is working in a library, shelving books. She sighs.

Woman: There's got to be more to life than the Dewey Decimal System.

The goofy jingle starts playing and the Fundies Undies squad comes racing through the stacks. They swirl around the woman, giggling merrily, and when they they step back she has become a busty beauty in a lacy red camisole.

Woman: But... how?

Announcer: The Fundies Undies squad can bring out the sex goddess in anybody!

The woman pokes at her ample new bosom in disbelief.

Woman: Wow!

Cut to: A middle-aged businessman standing at a railway station. He gives the camera a sour look, shaking his head.

Man: Ridiculous! The Fundies Undies squad certainly can't bring out the "sex goddess" in me!

Announcer: Sure they can!

Man: What..?

The jingle starts playing again and a baggage cart passes between the man and the camera. When it moves on we see that he has been changed into a voluptuous blonde, female version of himself. He's packed into a snug little black corset, with a garter belt, stockings and high heels.

Man: What the..?

The Fundies Undies girls bounce into the frame, pointing at the man's transformed body and giggling.

Girl 1: Ooh, she turned out so pretty! Just look at how that lingerie flatters her curves!

Girl 2: Yes! And see how her corset lifts and separates those double-Ds!

The man blushes, fumbling to cover his cleavage.

Man: But... I don't wanna be lifted and separated!

Announcer: Fundies Undies! They'll bring out the sex goddess in you!

Man: Hang on, don't end the commercial now! Change me back! Change me back into -

Commercial ends.