<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Is it true that LSD can be put on the back of a stamp?
<|assistant|>
No, it is not true that LSD can be put on a stamp. LSD is not classified as a drug that can be delivered through mail and is instead classified as a Schedule I substance which means it has no approved medical uses and a high potential for abuse. As a result, it is not legally possible to put LSD on a stamp. Additionally, the United States Postal Service specifically forbids the mailing of any illegal substances through their mail system. Therefore, the claim that LSD can be put on a stamp is not true.