(i) noun. Where the act of ejaculating inside a woman is immediately followed by a fanny fart, the resulting mess is referred to as a Sloppy Betty.
(ii) a person who commits the above.
(iii) verbal noun. The act of doing the above.
"I bust a nut inside her and by the time i'd rolled off her she queefed and did a Sloppy Betty all over the sheets." or using the verb: - "she Sloppy Bettied the sheets"
"Look what you did you dirty skank whore, you are such a Sloppy Betty"