Sploshing

Wet and messy fetish (WAM), also known as sploshing, is a form of sexual fetishism whereby a person becomes aroused when copious amounts of a substance are applied to the naked skin, face, or to clothing. 

Many people with WAM fetishes are drawn to the tactile sensations of wet or messy substances against their skin. Other individuals simply prefer the visual appeal of others getting wet or messy with products that have different textures, consistencies and colours.