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Quite often we ask ourselves hard to answer questions, like, "What exactly is a jerk?" Well, often we find it difficult to provide lexical definitions to such terms, but we can provide an extensive definition for them. This is just such an occasion. The lexical definition of the term, "jerk," escapes me. However, I can show you one! The guy on the right is a member of a bomb squad in midst of a deactivation. The guy behind him...Well, he's a "jerk."