Mary Poppins' Blooming Onion

When you put an unopened umbrella in a man's urethra and, once it is firmly in place, you open up the umbrella.

Guy 1: Bro, my dick hurts so bad.

Guy 2: Why, what happened last night?

Guy 1: Sarah gave me a Mary Poppins' Blooming Onion and now my dick looks like the Sarlacc Pit.