Related Clues:

• Quiet call
• Reversed agreement with criticism -- sorry?
• Sneaky 'Over here!'
• River running through Thailand, Cambodia, and Vietnam
• "Hey, c'mere" sound
• Served up sample of desserts specifically used to catch one's attention
• Shops starting to employ attention-seeker
• Quieter alternative to “Hey!”
• (Hey, listen up!)
• "Hey, you" sound
• Sentence ender, of a sort
• "Hey ... you!"
• "Hey ... over here!"
• Tap alternative?
• [Hey! Over here!]