It inflates on its own

Nicki opened the box and saw the sex doll slowly inflate itself. John's newfound magic allowed for this and all the other magical traps littered throughout the mansion.

Nicki meanwhile was absolutely stunned by the fact that the sex doll looked like her.

"This is fucking weird!!" She exclaims as the sex doll stares at her. She then saw the sex doll start to move. Its arm went to grab her breast.

"Hey!! Get off!!" Nicki exclaims, slapping the dolls hand away