В основе песни реальная история про фанатку, которая залезла в номер Маккартни через окно ванной
Источник: http://music-facts.ru/song/The_Beatles/She_Came_in_Through_the_Bathroom_Window/
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She came in through the bathroom window
protected by a silver spoon
But now she sucks her thumb and wonders
By the banks of her own lagoon

Didn't anybody tell her
Didn't anybody see
Sunday's on the phone to Monday
Tuesday's on the phone to me

She said she's always been a dancer
She worked at fifteen clubs a day
And though she thought I knew the answer
Well I knew what I could not say

And so I quit the Police Department
And got myself a steady job
And though she tried her best to help me
She could steal, but she could not rob

Didn't anybody tell her
Didn't anybody see
Sunday's on the phone to Monday
Tuesday's on the phone to me