Wood

After browsing a little, you pick an old wooden handle. It had belonged to a chisel or rasp that is long gone, but someone kept the handle- you think it deserves to be put to a good use. It is made of polished wood, with a soft rounded tip on a pear-shape grip, with a wooden ring in the middle and a cone on the other side.

The next thing you find is a can of hand creme and these two will work together very fine. You are behind your sister, so she can't see what you are doing. You dip the wooden handle into the can, lubing it for the next move.

Her position is just perfect, so she is not warned as you push the wooden tool against her exposed ass. You are certain that she never did some anal, as she jerks in her bondage. She's trying to block the way, since she can't escape. You pull her cheeks apart with one hand, giving better access to insert the handle.

"Now enjoy a new sensation no one gave you before."

You can hear her squeal even through the tape, but it's her own fault.

"You can make it easy on yourself. All you have to do is just open up, instead of clenching your butt."

She hasn't listened to you, as she is still trying to close her anus. This makes it harder to work the handle in, but its shape- and the lube- makes it possible to penetrate that tight virgin ass.