block and fall joint, n. — Green’s Dictionary of Slang

block and fall joint n.

[SE block + fall + joint n. (3b); ‘you’d get a shock, walk a block and fall in the gutter’ (Sante, Low Life, 1991)]

(US) a tavern, catering mainly to black people, in which one would most likely be given some form of knockout drop in one’s drink and then be robbed.

1933

C.W. Willemse A Cop Remembers 136: They used to call them ‘block and fall joints.’ You get a shock [i.e. a drink of cheap liquor] walk a block and fall in the gutter.