“Murder is like potato chips: you can't stop with just one.”
“A vampire victim. I'd never seen a lone kill. They were like potato chips; once a vamp tasted them, he couldn't stop at just one.”
“Reading one book is like eating one potato chip.”
“Accepting favors from fiends was so against the rules. Like potato chips, you couldn't stop at just one, then you'd find yourself at Hell's front door trying to explain why your soul had a big brand on it that said “Property of Lucifer.”
“Would you buy potato chips that listed potato by-product or potato digest as an ingredient”
“Touching his cock was like eating chips; I couldn't stop after just one.”