Start with a playful tone:

"Peekaboo, it's Madena_ with a masturbation show that'll leave you hot and bothered! This 18-year-old colleague of ours is blessed with some seriously impressive assets - we're talking big, luscious boobs that'll make your head spin. And when she puts on a solo performance like this, you know it's time to grab a cold one (or two). So sit back, relax, and let Madena_ take you on a wild ride. You won't regret it." ??