A responsible applicant
Employer to applicant: "In this job we need someone who is responsible." Applicant: "I'm the one you want. On my last job, every timeanything went wrong, they said I was responsible."

Are caterpillars good to eat?
Johnny: Daddy, are caterpillars good to eat?

Father: Have I not told you never to mention such things during meals!

Mother: Why did you say that, Junior? Why did you ask the question?

Johnny: It's because I saw one on daddy's lettuce, but now it's gone.