Possible Clues:

• Archaic warning to watch out, danger ahead
• Jabberwock advice
• Look out for second-rate pottery
• Archaic word for look out, mind yourself
• We'll turn up in nude? Watch out!
• Look out, take care
• Be alert for dangers
• Archaic injunction to be careful, look out
• Caution about taking a long time on the Internet
• Word on a dog-owner's sign, perhaps