Step-Bro 

Step-bro is a spreading disease / mental illnesses that is commonly found on the child app "Pornhub" and steps sisters and steps moms are usually the victims of this deadly disease.

"Step-bro I'm stuck!"

"And that's how I met your mom"

Step-Bro by Mai_Atsumi July 12, 2021

step-bro 

a brother that is not your actual brother.

Looks like she is stuck *sniffs air aggressively*
Step-bro! Im stuck

step-bro by Racoon14 March 20, 2021

Step-Bro 

Go to church fucking dirty-one

Step-bro I’m stuck

Step-Bro by Swysja September 12, 2021

Step Bro

A guy who is not a blood relative therefore there is no risk of genetic mutations

Lucy is stuck in the sink cabinet and starts yelling for help. Ashton, her step bro, runs to the bathroom to see what all the yelling is about. He sees that his step sister is stuck, but in the position that she’s in, he notices that she’s got cake. Lucy was only wearing a blouse and short skirt with a very visible black lace thong. Ashton grabs her booty and massages it with his fingers. He then lowers the skirt, plays with the thong, and shoves his finger up her entering. Lucy lets out a loud yelp. “WhAt ArE yOu DoInG sTeP bRo?” She says. Ashton lowers her thong and starts playing with her clitoris with his left hand while jacking off with his right hand. Lucy is moaning in pleasure and suddenly, her insides feel like they exploded as her step bro pounds her. Lucy says in between her moans, “Did you use protection?” Ashton replies, “no risk of genetic mutation here” Ashton continues to pound her until the cabinet breaks and Lucy is now free.

Step Bro by DaddyMints July 21, 2020

Step Bro

A Pervy boy who likes to watch his sister master bate. When she catches him he fucks her to keep her quiet. They are usually scrawny and have a finely trimmed bush

Girl: What are u doing Step Bro
Boy: I’ll do anything to keep you quiet.

30 minutes later
OHHHH GAAHD I FEEL IT IN MY STOMACH

Step Bro by MCALHWS February 6, 2019

Step bro

A naughty man over 18 y/o

“What are you doing step bro???”

Step bro by Lukaschild January 12, 2020

step bro

the guy that step sister gets horny with

Step sis: "Step bro, what are you doing?"
Step bro: "I got stuck."

step bro by The guy he is looking for February 13, 2020