Possible Clues:

• Spilling red wine on the host's white couch, say
• Improper etiquette at a social gathering
• Breaking the host's bowl, for example
• *Double-dipping, e.g
• *Spilling a drink or eating all the guacamole, say
• Double-dipping, e.g
• Taking the last beer, for one
• Spilling one's drink at a shindig, for one
• Gaffe at a social gathering, in modern lingo