A butterfly kiss to the anus.
The act of fluttering ones eyelashes against the receiving parties anus to create a light, tickling sensation.
Sally found receiving a butter flutter from Harry very sensual.
The effluent mixture on your cock after fucking a girl in the ass who has the dirty pirate booty hole.
Jerry got the peanut butter flutter after fucking Misty in the ass. I told him that bitch had dirty pirate booty hole...
The combination of jizz and shit after anal
There was a lot of flutter butter on my ass yesterday
The act of Prince Little Money or L Money has horse sex with Fluttershy and she rides him while he's in the shower in the bathroom but he's on his rear-two legs standing up and he's moving her up and down on his cock holding her like a fleshlight until he ejaculates into her with the biggest, fattest, sticky white sperm load imaginable but it starts to drip out of her flutterpussy therefore he has buttered up Fluttershy with the formal term being "Flutter Buttering"
Last night Rarity told me L Money was Flutter Buttering Fluttershy at his countryside castle estate... That's why she's swollen back there...