A tongue twister is usually three words or more that are hard to say over and over again because all the words start with the same or similar-sounding letters. "Three thick tree twigs" is an example.
Look around you, pick any object, and make a tongue twister from it by thinking of other words that start with the same letter and by quickly saying those words in a row. For example, start with "dirt"
You could say "Dry dirt desert drops". Try saying it three times really fast. Then take your tongue twister and have another Cub try it out. Or use your name - "Sam sips silly syrups".