Term originates from Aston Gaels Tpur. Like a clusterfuck but just a million times worse. Where everything is a complete shambles but also proper fucked at the same time. e.g "This whole situation is fucking shambolic" could be described as being "Shamblefucked". Andrew Wing is credited as being the original "Shamblefucker"
Everything is fucked and it's a shambles, this is a proper Shamblefuck.