Related Clues:

• Jollity
• Gag reflexes?
• Gets it, apparently
• Cracks up
• Music to 17-Across' ears
• Music to a comic's ears
• Jokes
• Comic's rewards
• Chuckles
• Guffaws
• Comedy offering
• Shows amusement
• Expresses mirth
• Funny to find a month in the left hand side initially
• What you don't get from 14 down