It’s simple as mud

Mike Kovacs, Vice President of Malaphor Hunters (MAHU), heard this one at a meeting.  It think it is a conflation of “simple or easy as pie” (very easy or simple) and “clear as mud” (not understandable).  Maybe the speaker was thinking of his childhood, making mud pies?  And of course mud and pie are both three letter words, worthy of a mix-up.  Could the movie Blood Simple also have been on the speaker’s mind?  Blood rhymes with mud.  A big thanks to Mike for hearing this one and sending it in!