Fanny like Mary Poppins' bag 

A fanny which appears smaller on the outside than the inside. A very perceiving growler. A very spacious vagina.

Thought she was a standard one but nahh she had a fanny like Mary Poppins' bag

Fanny like Mary Poppins' bag by Barry Shaazaaam November 4, 2010

The Mary Poppins

The action of inserting an umbrella into one's arsehole and opening it to full capacity whilst inside their being.

Karen complained to the manager after her umbrella broke from doing The Mary Poppins too much.

The Mary Poppins by Fish finger sandwiches October 31, 2019

Briggsy Poppins 

A gay stage musical starring arty dwarf Briggsy as a flying homosexual nanny. Most notable for the pornographic scene in which Briggsy penetrates the camp cockney chimney-sweep with his umbrella.

Briggsy Poppins? Worst musical since "Gay Jizzerables"

Briggsy Poppins by Gordy Frigmahole December 23, 2006

Mary Poppins Purse 

(1) A purse containing everything but the kitchen sink!
(2) A purse that one must pull out the strangest items in order to get to what they're looking for.
(3) A purse that is tiny, but apprears to hold huge amount of items in it.
(4) A purse one must dump out the entire contents of to get one small item out.

I got stuck behind a woman with a Mary Poppins Purse at the supermarket. This crazy lady had to take out everything in her purse just to get to her wallet. She had playing cards, toothpaste, hand sanitizer, dental floss, 3 bottles of pills, and whole lot of other junk just dumped on the counter. It was a small purse, too. I can't believe it holds all that stuff!

Mary Poppins Purse by DeWinter July 6, 2007

poopinsnatch

A vagina in a mans anus

So and so has a real juicy poopinsnatch

poopinsnatch by Jon Muzychka Criminal March 13, 2019

Mary Poppins

1) A well composed/happy person.

2) To do something well/flawlessly. From the measuring tape held by Mary Poppins "Practically Perfect in Every Way."

"How'd you do on test?"
"I Mary Poppins'd it."

Mary Poppins by Christoper M Norton July 16, 2008

britney poppins 

When someone is penetrating you with the Mary Poppins umbrella and shaving your head at the same time.

Jackie told her lover, “I have the clippers, grab the umbrella, it’s Britney Poppins time”.

britney poppins by Langbeef January 14, 2018