Possible Clues:

• Sound before 'That's all, folks!'
• Struggle with one's words
• Trouble with first letters of statement, say
• Thus might the saint give vent in 36 across
• Talk like th-th-this
• Stammer a la Porky
• Repeat oneself?
• The saint will thus speak only with difficulty
• How the saint may hesitate to speak
• In a word, find it hard to come to a conclusion