She has to learn to beg.

Dee eventually gets off of the sand.

She's led away to another rock, arms still immobilized and mouth still gagged.

Sarge enjoys rubbing the sand from her body, just because she doesn't want him to!

She is laid out on a big rock and spread wide.
Dee is not comfortable.

He let her suffer there.

The hot rock started to feel like it was burning her.

Sarge returned several minutes later.
He had a flogger.

"You will beg for me to fuck you," he explains, holding a dildo on a stick in the other hand.
He plants it firmly in the sand.

The flogger is swung...

He doesn't flog her back.
He doesn't flog her tits.

He flogs her hard on the pussy.

After a few minutes, he stops.

"One grunt for more. Two grunts for me to fuck your pussy."

Dee has a second to decide.