Related Clues:

• Smooch in a school hallway, e.g
• Newlyweds’ indiscretion, briefly
• Certain hand-held ... or hand-holding
• Kissing on a crowded sidewalk, for short
• Obsolescent device like the IBM Simon, e.g
• Obsolete organizer, for short
• Bit of intimacy in a crowd, briefly
• Behavior that might prompt someone to yell 'Get a room!'
• Makeout sesh at a mall, e.g
• "Get a room" elicitor, for short
• Awkward thing to witness while third-wheeling, in brief
• Smartphone precursor, for short
• Smooching on a plane, for short
• Kissing outside letters?
• Hugging in public, e.g., briefly