In a language where "What's your address?" can become a homophone of "Watch or a dress?", there's plenty of scope for misunderstanding, even for what you might call 'native listeners'. For learner listeners, the situation is many times more perilous. For them, listening can be like wandering in a surreal soundscape. Thought it might be an interesting topic for a talk...
Never ask a barber if you need a haircut
From As they say in Zanzibar by David Crystal
This list of topics will develop over time - the more items tagged, the bigger the word!