It's hard out there for a rap star trying to come out with the next big sexual euphemism. Armed only with weather patterns ("make it rain"), child-friendly sweets ("lick it like a lollipop") and whimsy ("superman that ho"), today's hip-hop stars struggle to coin a sex term as eternal as LL Cool J's ultimate rap sex euphemism: "doin' it." These are their stories.

RAP SEXUAL EUPHEMISM: "Wipe me down"

DEFINING MOMENT: Lil' Boosie’s “Wipe Me Down"

UNDERLYING MEANING: There's no true consensus on what the fuck "wipe me down" actually means. But in the tradition of Lil' Wayne's "Walk It Off," Boosie's "Wipe Me Down" carries both sexual and non-sexual connotations. Most innocently, the phrase implies that one is "clean," "fresh," or otherwise "fly." In entreating another to "wipe me down"—as one would wipe down a newly washed car in the final stage of cleaning—the speaker indicates that she has reached the pinnacle of freshness.

The alternate meanings of "wipe me down" concern various acts associated with blow jobs: "to suck a man or boys dick or prick," suggests one Urban Dictionary user. Others consider a wiping down oral sex by proxy: "to give a guy a handjob by licking your hands and 'wiping' him down." Still others present a more ambiguous, but clearly sexual meaning: "To be used when things go extremely well with someone or something, for example, with someone of romantic interest. To wipe him or her down is a very good time indeed."

SHELF LIFE: Will never make it through the winter. Song kinda sucks, too.

It's hard not to think about sex when an R. Kelly jam comes on the radio. After all, Robert Sylvester Kelly is one of the foremost sex crooners of our time. But Kelly doesn't just toss around sexual euphemisms in his songs—he mixes them up in ways that are often misleading, confusing, and maybe—just maybe—transgressive. Is R. Kelly unintentional invoking anal sex and phallic imagery in his heterosexual love songs, or is it all just clever wordplay? Take a tour of R. Kelly's twisted sexual vocabulary, after the jump.

"Chocolate Factory"

[youtube:v=DeJMzLEjSUw]

UNDERLYING MEANING: Butt. "1. A process inside the anus which produces shit as we know it. 2.The name of R. Kelly's new album. Coincidence? I think not."

R. KELLY USAGE: R. Kelly's lady. (Seriously, dude?) "candy carmel coated, taf-fies, chocolate covered strawberries, love so sweet / you're my chocolate factory, gum drops / mixed with chocolate, milk bars, there's so much variety / love so sweet, you're / my chocolate factory."

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"Down Low"

[youtube:v=8icIgtdKkdA]

UNDERLYING MEANING: Secret homosexual liaisons. "when black males try to remain straight by having sex with other men then go home and sleep with their wives."

R. KELLY USAGE: Secret heterosexual liaisons with a woman who already has a man. "Secret lovers is what you wanna be / While making love to him girl you're silently calling on me."

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"Snake"

[youtube:v=BqqBTEPAag4]

UNDERLYING MEANING: Slang for male genitalia. "Penis."

R. KELLY USAGE: The way a woman moves her body. When this song declares, "love the way you put that thing on me no doubt," R. Kelly insists he's referring to the way "you move your body like a snake." And not the other thing.

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"The Package"

[youtube:v=hc7QdHqA0D4]

UNDERLYING MEANING: A dude's junk. "Male genitalia (penis and scrotum together), often associated with large size." R. Kelly has invoked this usage before, in "Make Me Love Her."

R. KELLY USAGE: "The Package," in epic R. Kelly hip-hopera "Trapped in the Closet," is a mysterious threat to group of people linked through a chain of casual sexual encounters. It's probably HIV, but we can't be sure—until R. Kelly comes out with more episodes, the series ends on a cliffhanger. Urban Dictionary confirms that "package" also means "AIDS—derived from prison slang: the complete package." Knowing R. Kelly, the "Package" will turn out to be something completely different.