As an old person, as ever I have no idea whether anyone actually uses any of these expressions, and in time Urban Dictionary will probably contain every random combination of four letters, but note that they all have negative connotations. Much as I don't know anything about branding, I would not want to position the sound of my brand name close to them.
BSNYC's masturbatory euphemism of choice is "foffing off".
BSNYC's masturbatory euphemism of choice is "foffing off".