John: *hogging the bathtub for epic WWII battle reenactments*

Paul: *taking an eternity to shampoo and blow dry his thick, luxurious hair*

George: *only goes in there to use the toilet, shave, or have a quick ciggie*

Ringo: *singing loudly in the shower*

What to listen out for:

John: "ZE ENGLEESH ARE COMING!! VE MUST DESTROY ZEM!!" *splash!*

Paul: "I would totally date myself if I could... ZAP!"

George: "Don't tell me you've never shaved with a safety razor!" 

Ringo: "John! That's my toy submarine! Give it back!"