  We propose a robust, unified framework, in which the similar baryon and dark
matter cosmic abundances both arise from the physics of weakly interacting
massive particles (WIMPs), with the rough quantitative success of the so-called
"WIMP miracle". In particular the baryon asymmetry arises from the decay of a
meta-stable WIMP after its thermal freezeout at or below the weak scale. A
minimal model and its embedding in R-parity violating (RPV) SUSY are studied as
examples. The new mechanism saves RPV SUSY from the potential crisis of washing
out primordial baryon asymmetry. Phenomenological implications for the LHC and
precision tests are discussed.
