Salmon Flaps are the fishy Flaps that you must spread, if you dare, to enter her fishy love hole.
This phrase is commonly used when describing a skip holed whore who doesn't wash properly. The smell, when she opens her legs can make a man faint if he goes down on her. Even when wearing jeans she is often told to 'CLOSE YOUR LEGS LOVE!'.
:)
This phrase can be used in many circumstances, but this is the most common.
Person 1: Did you fuck Steph last night?
Person 2: Yeah mate, I fucked that whore good, but her Salmon Flaps nearly ate me whole. Boy was she smelly! Like a Salmon.
Sagging butt cheeks with age and weight loss such that a pencil could be held in the crack between back upper thigh and bum. Vastly superior to all alternative definitions for the sheer ubiquity of the phenomena but also because legs are the human equivalent to wheels and human mud flaps are therefore perfect homologues to vehicular ones. Entered Urban lexicon in Spinal Tap's hit Big Bottom in which this second chorus appears:
Big bottom, Big bottom Talk about mud flaps
My gal's got 'em.
Big bottom Drive me out of my mind.
How can I leave this behind?