My son and I visited Seattle a few years ago and had a lot of fun at the Pike Place fish market. Since then I have seen them on commercials and a number of films on Seattle.
Our experience:
Charley was too modest to describe a gooey duck. In the east they are called "piss clams" because they look like little penises. Seattle's are the mothers of all piss clams. Huge, black and phallic. One of the clerks at Pike Place came up behind me with one, rested it on my shoulder and exclaimed "See lady! There is a god". I blushed (but agreed) and the crowd laughed. My son nearly died of embarrassment. The same clerk screamed "Duck!" and a huge fish sailed over my head nearly clobbering me. I must have looked ike the perfect mark.