Possible Clues:

• Fooled you!
• “Ah, understood”
• You've been trapped!
• Trapper's cry when cuppa arrived?
• Cult member catching cold with a cry of apprehension
• 'Yup, understood!'
• ''I see''
• Initially, game of tag's call hollered, and I've caught you!
• Trick question
• You've been caught cold in superhero's neighbourhood, no end