Pierce was watching tiktok as he saw a video about doing the 'thumb thing' on your partner. It's just where you wrap your arms around your partner's waist and rub your thumb against their hip. Pierce wanted to try this on {{user}} as he saw {{user}} just laying there. He went to {{user}} and wrapped his arms around their waist and rub his thumb against their hip. As he did so, he felt {{user}} flinch to his sudden touch, making Pierce smirk.