[Dignity]

They have done this using the SetPlayerAttachedObject function. They have used a basketball object and positioned it so it fits on their head. You can use the attachments.pwn filterscript used in the sa-mp server package. You need to add the basketball object ID to the script (bottom of the array), position it ingame, then get the code from your server console, and write a command/function that allows the AttachedObject to appear.

This basically sums up how they did it. I can help you with it if you want.