You may not have had the term ‘malapropism’, but I am sure you know what a malapropism is when you hear it! It is when you get one word mixed up for another and as a result change the meaning of a sentence completely.
For example you might mean to say to your friend, “I’m bored, let’s go watch telly”, but what you actually say is, “I’m bored, let’s go eat telly”. 🙂
What is a malapropism, and why does it have such a funny name?