"How come I enjoy smoking and you don't?" (classic print ad).

(click, from a 1976 Playboy)
"How come I enjoy orgies every week and you don't? How come my cock stays throbbingly hard after my second orgasm and yours doesn't? How come my tousled salt & pepper hair looks fantastic and yours doesn't? How come you're staring into my eyes and not at the Surgeon General's warning down there? How come it's the 70s, and I don't have any chest hair (pre-Photoshop retouching)? Previously in: 1970s ads.