Well, they are all furry creatures with large penises.  The "fuck slug" is literally an inveterate animal (or a snake-like vertebrate animal) with tumors growing out of it saying "FUCK"
		 
		
		
		
		
		
		
			
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				While a standard engine is powered by a belt connected to the crankshaft, a turbo engine runs on its own exhaust steam, making it more energy efficient. -- CNN
			 
		
		
		
		
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