Coolness – Introduce a cool touch

Run an ice cube lightly along their body (common spots are nipples, inner thighs, or along the spine) and then perhaps kiss or warm the spot with your mouth after. Or use a chilled metal spoon/ball as a massager in short bursts. Cool water from a spray bottle misting their skin can also surprise them. A cycle of cool → then warming up again can create a rush of blood and sensation.