Nate Diaz, 'Khabib Fights Like a Bitch,' I Hope They Both Lose

[[tmz:video id="0_5ve73u1g"]] Nate Diaz is rooting for Khabib and Conor to BOTH lose at UFC 229 -- saying he already "slapped the sh*t out of both of 'em" ... and neither one deserves to be champ! That said, Nate also believes Conor is the favorite…