The phrase "Wham! Bam! Strawberry Jam!" is actually a prophecy from the mid-14th century made by a delirious fishwife-turned-wisewoman about some period of the future. She always made these outbursts in threes, which is why she was never prosecuted as a witch (she maintained that one prophecy came from each of the members of the Trinity) and they have since been interpreted as referring to consecutive decades. So far, scholars have identified certain aspects related to world and entertainment events but are somewhat perplexed by the final idea.
Somewhere in the lonely streets of Minsk a man with a spade in his head is beating up a victim with a large coffee cup. Could this be another case for Attila the Pun?