Yes, there is food that is actually named "Spam." Popular belief says that the name is an abbreviation of "spiced ham", "spare meat", or "shoulders of pork and ham." Basically, it is canned meat made from different animal parts and who knows what else. Spam got popular during WW2 because it was consumed by the soldiers that fought on the frontline. It is said to be the food of choice for those with meager earnings or a more adventurous spirit.
After the war, it became popular in countries across the world after it was introduced by the American army. It became so popular that even British Prime Minister Margaret Teacher referred to it as a "wartime delicacy." Nikita Khrushchev said, "Without Spam, we wouldn't have been able to feed our army." It might not have had the best taste but it sure had its use during the war years.