Leader of the game should choose one well-known acronym and all the players one after another try to decrypt it. In the end you can vote for the wittiest description.
Examples, how acronyms could be decrypted:
NASA – no aliens seen anywhere
BMW – broke my wallet
CNN – constantly negative news
Another fun activity is to create words using letters of car number plates. Just look at the last 3 letters and make a word.
When car number plate is „303 mrg“, word can be „morning“.