I was a kid, not too worldly.
My brother told a joke about the man that the first time he had sex, he was scared, in the dark and all alone.
I didn't get it.
Years later I'm thinking of Laurie in Biology 101 and I'm beating away and it dawns on me, all alone in the dark and jerking off.
I got the joke.
I told Laurie and she laughed her head off, not at the joke but that it took me until then to get it.
I asked her if she ever masturbated, and she told me all the time, that's why every girl has a large hairbrush with a handle.
I don't get it. She says, look, I use the handle to fuck myself. I say, I don't get it.
She smiles and calls me helpless.
I go to her apartment, which she shared with three other girls, and I push her onto the bed and fuck her.
I use my hard dick and stick it in her wet pussy and fuck her.
Now she understood that I got it, and I played dumb for her.
Why use the handle of a hair brush when she had access to a hard dick? Get it.