Bobby and his galpal were walking down the path that led to the deserted lover's lane. His girl saw two rabbits doing what comes naturally along the path and asked:
"Bobby- what are those two rabbits doing?"
"They're making cigarettes, babe." He answered.
A while later, Bobby and his girl retuned back the way they came along the same path.
Bobby's girl asked: "What kind of cigarettes did we make?"
"Well," Bobby replied, "If you get a hump in your belly it was a Camel, and if you don't it was a Lucky Strike."