Harry On PIG

# hog: domestic swine
# slob: a coarse obnoxious person
# hog: a person regarded as greedy and pig-like
# bull: uncomplimentary terms for a policeman
# live like a pig, in squalor
# devour: eat greedily; "he devoured three sandwiches"
# pig bed: mold consisting of a bed of sand in which pig iron is cast
# a crude block of metal (lead or iron) poured from a smelting furnace
# farrow: give birth; "sows farrow"

Or the one mentioned in this reference www.tdwilliamson.com: A device with optional elastomer cups inserted into a pipeline to perform any one of a number of functions: cleaning, displacement, batching, or internal inspection. It gets its name from the squealing noises the pipeline pigs made when first used."
Agh...the magic of WORDS...no wonder one must be able to "READ".