Someone posts a 4 letter word.
Change one letter that could form another word. The word you will form should be English and spells correctly.
If you can't think of any other words to form, then post 'game over' and think of another four-letter word to begin a new game with.
Example:
Person 1: Card
Person 2: Care
Rules:
1. You may not rearrange the letters. Example: Card -- Race (replacing d with e and jumbling c and r)
2. You may chat with others, as long as you still continue the game
I'll Start: Good