Besides the "Five Pounds of Possum" one (which, down here, is "Forty Pounds of Possum", since everything is bigger in Texas)? I always get a chuckle out of the Holy Modal Rounders' "Mister Space Man", a parody of a really bad early '60's pop tune called "Mr. Bass Man". I don't think my father ever could remember a full set of lyrics to something if it wasn't absurd. These are some of the gems on which I was raised: 1) "Maxwell's Silver Hammer" (Beatles) 2) Hostile Baby Rocking Song ("there's an island way out in the sea, where the babies they all grow on trees"). 3) the one about the Cadillac and the Nash Rambler ("Hey, buddy, how can I get this car out of second gear?") 4) "Merchant's Lunch" by the Red Clay Ramblers.