brown babies Share definition Flag brown babies is a slang word for poop. This term was made famous by jakeandamir.com and collegehumor.com. Hey, be right back. I'm going to go make some brown babies in the pool. brown babies by Ingrid_Bloom May 20, 2008 0 0 Get merch Get the brown babies mug. Buy Now — $32.95 See more merch