Possible Clues:

• "What ___!" ("Bummer!")
• 'What ___!' ('Bummer!')
• 'What ___!' ('Ho-hum')
• 'What ___' ('Ho-hum')
• 'What __': 'Ho-hum'
• Not fun at all
• ''What --- it is getting old...'' (Rolling Stones)
• "Kind of ___" (1967 hit)
• "What ___ it is getting old" (the Rolling Stones)
• 'Kind of ___' (1967 hit song)