Green’s Dictionary of Slang

croaker n.⁶

(Anglo-Irish) a potato; usu. in pl.

1923

J. Manchon Le Slang.

In compounds

croaker sacks (n.)

(US) shoes, orig. made of burlap sacks.

1994		Snoop Doggy Dogg ‘21 Jumpstreet’ 🎵 on Murder Was The Case [soundtrack album] Nigga let me interact with my black croaker sacks / And a gray golf hat tilted to the back (what’s up?).
2001		Jayo Felony ‘C Walk & Skip’ 🎵 Crip Hop [album] I’m on ya like CJ Mac; they labeled us underdogs / Chuck Taylors, croaker sacks, Romeos, wallacies.