When you are well equipped/have acquired lots of equipment. Modern adaptions to the word have developed in urban areas where ‘kitty’ is often used in place or alongside kitted. Kitty tends to be used in a more informal environment.
“All I need is a vertical foreskin and then my Scarl will be fully equipped”
“I have a spare vertical foreskin I will drop for you”
“Sweet thanks. Kittyyy”
“Wow your kitted”