Lil' Wayne

Safe sex is great sex

Better wear a latex

'Cause you don't want that late text

That "I think I'm late" text

(From his 2008 hit, "Lollipop (Remix)."  Although "Latex" and "late text" aren't perfect homophones -- words with the same sound, but different spellings and different meanings -- they are close enough to appreciate.  Virtuoso rappers like Lil' Wayne can pack clever wordplay like this into their rhymes without interrupting their flow -- they make it sound effortless.)