Play dumb

Josh looks over the dick on Holly's body. He figures this might be a fun way to tease his sister if he keeps his power a secret.

"That's so strange, Holly. Did this just happen today?" He asks.

She nods and her dick twitches too. Josh stands up straight and shrugs his shoulders.

"I think we should make sure it works properly. Sit on my bed." He says.

Holly complies and hops on his bed. She squirms uncomfortably as Josh sits next to her.

"So.... what are we checking?" She asks nervously.

Josh ignores her question and reaches down grabbing her cock. Holly squeaks as the foreign sensation strike her body. Josh slowly glides his hand down teasing Holly. Her dick gets firmer in his grasp

"Josh stop.... we can't do.... this." Holly says as Josh's strokes cause her to moan.

"No no, it's important we check everything." He says without batting an eye.

Holly leans against him as he keeps stroking her. He brings her close to the edge able to tell from her intense breathing and pulls back slightly to prolong the pleasure. Holly groans loudly **** for release, but Josh keeps her from climaxing.

Her moans get louder and louder. Josh gets scared that someone might hear them and decides to let her finish.

"Let me know if you feel anything strange." He says as he grips the dick tighter and jerks her off faster. Holly's moans a quicker and shallow.

"Don't stop.... don't st.... I think i'm..."

Holly doesn't finish her sentence as her dick erupts and sprays cum all over herself and Josh's hand. She lays back on his bed sighing a breath of relief as Josh wipes his hand off.

"It seems like it functions well." Josh dryly remarks.

Holly blushes realizing what just happened and quietly thanks him and quickly leaves the room.

Josh sits on his bed wondering what to do next.