A code word used by some people for the website Amazon.com in order to protect the great deals that are always offered.
Dude, did you see how cheap that TV was on Big River? I know buddy, it was over half off what you'd normally pay!
by enem January 24, 2009
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Having anal sex with a African American with a rather large ass whilst they have diarrea
I’d like to have a Big Muddy River with her
by Beeno55 March 11, 2019
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When you pee in his/her butt and then pull out really fast, causing a mudslide in the process.
I told him to leggo my eggo, but he didn't, so I gave him The Big Muddy River.
by Gaychel June 24, 2015
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