Chopper woke up and saw the present next to him.
"Santa came?!"
He excitedly opened the box, hoping it was a bunch of cotton candy, but instead it was Robin's thighs.
"Huh?" Chopper looked at it confused.
He saw a note and read it. It said "Use your penis fufu~".
Chopper confusedly did what the note said and put his penis in-between her thighs where they were at their plumpest and squished against each other. He started to thrust inside of it and quickly started enjoying the experience. He activated Heavy Point and started to aggressively fuck Robin's thighs, a loud "PLAP" happened every time he thrusted inwards.
"What is this?! It feels amazing!" Chopper said as he continued to thrust.
Robin started moving her thighs herself alternating them back and forward as Chopper thrusting. Sometimes squeezing tight, sometimes becoming loose. All the various sensations were too much for Chopper to handle.
"W-What's this feeling that's building up?! And why does it feel so good?!" Chopper said as he was about to cum.
When he did cum, Robin clasped her thighs tight against his penis so the semen didn't escape. She could feel the space between her thighs fill up with Chopper's load. Her pussy was getting unberably hot from the feeling of all this hot, sticky, and slimy semen all over her.
When Chopper finally finished cumming he feels backwards, his eyes turned into spinning spirals.