Related Clues:

• Ace, king, or queen
• Senior moment, e.g
• Suited king or queen
• Wallet item
• Subscription slip
• Gift-box attachment
• Mental failure
• Five of hearts, for one
• Slip of memory
• Break in concentration
• Real character
• Fail in duty
• 'Here's my ___'
• Brain freeze
• King or queen, but not a prince