I enjoy a good laugh so I'm okay with pranks within reason. With that said, I feel like this prank goes a little too far. I think this prank is cruel and could really upset and hurt someone. I like the concept behind it though. I think whoever you plan to prank with this, you should really be sure that they are not easily offended. Be entirely sure that they will get a good laugh AFTER the prank. Pranks should be humorous and fun. Getting someone really upset and hurting their feelings isn't humours or fun.