The Zoologists/Open the shower curtain

Lisa decides to open the curtain, thinking this is an awesome idea. She reaches her hand out and quickly grab the curtain pulling it in one movement.

She stands their shocked and wide eyed as its not her sisters but her dad who was taking the shower. Lisa's eyes start to go down to her dads private region.

Lisa stare's at his cock which looks big to her. He quickly covers himself up and yells "What the blimin' hell are you doing"