It happens a long time ago.
I was with my GF in a motel. We rented a room with a spa.
When filling spa, my GF had the great idea to put some bubble soap... We had to emptied the whole thing because there was too much bubbles,
When It was almost empty, I was sitting in a dense foam.
I stood up.
Fists on hips, I called my GF: "Look at this!!!"
I had a giant 3-4 inches diameter foam dick! Eh Monsieur!!!