Mermaids Flannel 

The term reserved for a woman with a very, very wet fanny.

"Her chuff is as wet as a mermaids flannel!

Mermaids Flannel by Cunty B February 23, 2009

mermaid's flannel 

extremely wet. Opposite of an arab's sandal

Frankly my dear, you're quim is dripping. I conclude that you are as wet as a mermaid's flannel - Sherlock Holmes.

mermaid's flannel by mad dog February 25, 2004