21. "Hot in Herre," Nelly
Over one of the Neptune's signature beats, all rubbery head nod and shoulder-shake, Nelly keeps it simple: "It's getting hot in here/so take off all your clothes." Background singer Dani Stevenson keeps her answer to the point. "I am getti'n so hot, I wanna take my clothes off" Perfect for those days when the mercury hits the 90s and clothing becomes optional.