Possible Clues:

• What happens when you're having fun?
• "Can't believe it's been that long!"
• Space ... / Bar ..
• *'It's 2 a.m. already?!'
• "The years just zip by!"
• By embracing life at sea, it doesn't seem as long!
• Start of an ''entertaining'' adage
• "The years go by so fast!"
• Limits fee (anag) - proverb