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1.
When one person is showering, the other person takes a dump in the bathroom causing extreme difusion and steaming them out of the shower.
Shelly is showering and Johnny just gave her a Seattle Steamer. She is very upset as she is no longer clean.
by Francois1980 January 01, 2009
 
2.
while engaging in the 69 position while the male happens to be eating out the female , the female then releases a ginourmous brown substance in which is insearted into the males boca (spanish for mouth)
o man that was a nice seattle steamer (EHHH HIGH FIVVEEE)
by Georgene Kenneth IV October 05, 2007