<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
how do i stick a sign on someone's back without them noticing?
<|assistant|>
You can try to be stealthy and stick the sign on their back without them noticing. You can put the sign in a bag or other item and when they aren't looking slip it over their shoulder or onto their back. Or you could try to be more direct and ask them if you can put the sign on them.