You can joke to your friends with showing your viewers to them. It's very easy. Adjust the duration as you want, add a viewer and show to your friends. You can try it easily.
How to install Who Viewed My WhatsApp Profile? APK?
2. Click the download button to download Who Viewed My WhatsApp Profile?.Once the download completed,find Who Viewed My WhatsApp Profile? in your download folder or notification center and tap the icon to install the APK.
3. Find Who Viewed My WhatsApp Profile? icon in your home screen then tap the icon to open it.