Wordnet 3.0
NOUN (2)
1. 
 something of little value; 
- Example: "his promise is not worth a damn"- Example: "not worth one red cent"- Example: "not worth shucks"[syn: damn, darn, hoot, red cent, shit, shucks, tinker's damn, tinker's dam]
2.  an expression of disappointment or irritation; 
WordNet (r) 3.0 (2006):
shucks
    n 1: something of little value; "his promise is not worth a
         damn"; "not worth one red cent"; "not worth shucks" [syn:
         damn, darn, hoot, red cent, shit, shucks,
         tinker's damn, tinker's dam]
    2: an expression of disappointment or irritation