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1.
Deep Steamer is another way of saying you have to take a huge dump.
When used in context
"Yo u have to go take a deep steamer"
If yelled in a large group of people, the older crowd will never know what you are talking about, but the younger crowd will. Making it a very non schelant meaning so other people won't get grossed out by saying it another way.
by Undermysteam October 04, 2013