THAT BIRD HAS FURRY LEGS
Imagine Person A of your OTP going down on Person B. Person B is sitting on the bed while Person A is working their mouth below the belt. The feeling of pleasure gets so good for Person B that they find themself laying back on the bed.
Imagine Person B of your OTP having a messy hair day, and Person A absolutely loves their handiwork from the night before, and teases them about it in public when Person B’s hair continues to act up, just to tease them more when they begin to blush.