Possible Clues:

• Butt from roaring farm animals
• Merry cattle? That's a joke!
• Fool
• One that's ridiculed talks, coughing haphazardly
• No luck with this gag -- terrible joke
• Aunt Sally's cattle with a sense of humour
• Ragged chap who might be found in funny farm?
• Victim as result of 'Comedy Store'?
• Ragged person in Comedy Store?
• Howling animals, target of derision