Sentence:  The neighbor is eventually able to sell her home despite Homer's pants-less affronts to propriety and decency and Bart falls deeply and instantly for one of its new inhabitants, a tough but charming and funny tomboy girl named Laura (voiced by Sara Gilbert) with just the right combination of toughness and sweetness, <WSD>granite</WSD> and honey. 
Meaning of the word marked with <WSD> tags:  Toughness; the quality of having a thick skin or being rough.