<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
what are some pranks with invisible ink i can do?
<|assistant|>
Using invisible ink, you can prank your friends by leaving messages around the house or workplace that they can find only with UV light. Another idea is to hide little messages on friends' or family members' bodies using a UV light. You can also create a "secret code" among friends and have them decode it with UV light. You can draw pictures on the wall or paper using invisible ink and let the others find and reveal them when they use UV light.