the answers to some age-old questions

Zebras are white with black stripes it seems.

And, of course, that was just the segue for a joke:

A chicken and an egg are laying in bed after just having had sex. The Chicken is laying back relaxed and smoking a cigarette while the egg is restless, jittery, and otherwise not quite so satisfied. Noticing the egg discomfort, the chicken nudges it with a chickeny elbow and says, "I guess we answered that question once and for all".