The act of fucking your boyfriend to remove guilt after you cheated with another man.
I accidentally fucked another man so last night I had to do a little cleansing the palate.
It is what the woman must do sometime after pooping in order to next make herself presentable for sex by taking a shower.
Cleansing the Palate: after eating spicy Mexican food all night, Sally had to cleanse the palate before her boyfriend came over for a booty call.