If you are a straight male you love crabby!
If you are a lesbo girl you love crabby!
(say all with a Bohemian accent)
That's why when Sponge Bob first came out with the delicacy "Crabby Patti", Bahamians were shocked that this was a children's cartoon. Since Mr. Crabs has a slightly Caribbean accent, some Bahamians had thought that this idea was intentional. Soon Bahamians came to an understanding that the term was purely innocent and had nothing to do with its colloquial term.
This word is also used as an insult to men who are feminine, acting womanish or gay.
Standard English: "Get your dug out, slack/loose, stink, soggy vagina from around here!"
"Gyal crabby fat too bey."
SE: This/that girl's vagina is fat."
"Bey dah nigga like man king. Heez suh real crabby jed."
SE: That man likes men. He is a real sissy.