"Nookie" is another American slang word that I believe comes from the affectionate nickame "Snooky".

The word "nookie" takes us into the realm of the sexualized meanings of the word "sugar". A mild form of the sexual meaning of sugar is a grandmother's request to her young grandchild to "Give me some sugar". "Sugar" here means a kiss. In other contexts, "sugar" can mean much more than a kiss.

In my opinion, the phrase "Give me some sugar/I am your neighbor" from the Hip Hop group Outkast's hit song Hey Yah works so well partly because it has the clean meaning of giving a neighbor a bowl of sugar and at the same time, it has the "dirty" meaning of giving that neighbor much more than a kiss.
In other words, saying "give me some sugar" was a way for Outkast to say over the airways "Give me some nookie".

Here's a definition of the word "nookie" from urban dictionary.com

"Nookie
Something you get from someone that is sexual or loving in nature.
This word is slang for an ACTION not a body part.
Sugar, action, hooking up, kissing, hugging, sexual activity, etc..
"I'm going home to get some nookie from my girl/boyfriend tonight."
-by Tree Sep 11, 2003

-snip-

Notice the inclusion of the word "sugar" in that definition.

Also check out this use of the word "nookie" by the musical group Limp Bizkit:

"Nookie" is the first single released [in 1999] from the album Significant Other by Limp Bizkit. It is one of their biggest hits….The song is about Fred Durst's relationship with a past girlfriend, in which she used him for his money, and cheated on him with his friends, and yet he continued to stay with her despite the emotional distress this caused. The hook reveals his reason for staying in the relationship, which was because of the sex. "Hey, what the hell, what you want me to say?/ I won't lie, that I can't deny/ I did it all for the nookie".
http://en.wikipedia.org/wiki/Nookie_(song)

-snip-

So how did we get here from posts about the Cuban song & dance
"sucu sucu"?

In my opinion, it's all about the sugar.