Most Center controllers don't have a highly developed sense of humor about radar limitations, but one I heard at Jacksonville Center does:
*Cessna:* "JAX Center, Cessna One Two Three Four." *Center:* "Cessna One Two Three Four, JAX Center. Go ahead." *Cessna:* "Cessna One Two Three Four is 20 miles north of Jacksonville, 1500 feet, and we would like flight following." *Center:* "I would like to oblige, but at that altitude the only radar picking you up would be the highway patrol."
