Related Clues:

• Too hard, as bread
• No longer funny
• Flat, like beer
• Not real fresh
• Outmoded, e.g.
• Past one's prime
• Longstanding
• Getting tiresome
• Like unfunny jokes
• Like the Curiosity Shop
• Like rock-hard bread
• Gray-headed
• From way back when
• Going way back, as friends
• Long-time