Being executed with a bullet up the rectum, i.e. a very slow and painful death. Courtesy of Chistopher Walken in Things to Do in Denver When You're Dead.
I'm ordering a buckwheats kill on those fuckers that killed my son's girlfriend.
A series of small painful beatings administered in such a way as to inflict maximum pain without causing permanent damage or desensitizing the recipient. Implies endless pain. Used as a threat to Jim Rockford in "The Rockford Files" Season 5 "The Man who Saw Alligators" 1979
Give me the name or it will be a long night of buckwheats.
Buckwheats is in reference to the Little Rascal character 'Buckwheat whose eye's would get big whenever surprised. In the film 'Things to do in Denver When you're Dead' a Buckwheats hit is a term in reference to killing someone so painfully they would get 'Buckwheats' eyes.
To tell someone where the bear shit in the buckwheat means to explain something to them that they are very likely to know already, especially because it is self-evident.
«I'm not that stupid that I actually need somebody to tell me where the bear shit in the buckwheat: I can see for myself who the bad guy in the film is. Ta!»