I bet it's the same reason he appeared on a hot stinking steaming pile of letterman!
Cain walks out of an outhouse and tells his partner that he his wallet had fallen to the bottom. His parter recommends that they try to fish it out.
Cain says it isn’t worth the trouble, because it only had a couple of bucks in it and “I don’t want to get crap all over me”.
Ten minutes later, Cain walks back into the outhouse and tosses his lunch down the hole. His parter asks him why in the heck he would do such a stupid thing.
Cain explains, “Well, NOW it’s worth going down there”.