Sister Fister Edit Meaning

1.

The act of fisting your sister. Commonly refered to as incest.

Yo this kid named Francis is a fucking sister fister.

2.

a brother or even a sister that likes to casualy fist their sister up the vagina or even the arse hole. Most of the time resulting in a very sore vagina/anus, and if caught resulting in a sentence of 10 years in jouvey.

(here is a role-play of a sister fister and his sister)

Kirsten after a long sleep

Kirsten: o hi there Aaron i didnt see you over there in that dark corner.

Aaron: You dont need to see me, you just need to feel me

Aaron and Kirsten both grin and Kirsten turns around

See kirsten, aaron, fist, vagina, arse hole, incest

3.

Anyone who has shoved their hand into a friend's sister's cunt

1) WOW I PULLED THE SISTER FISTER ON STEPH

2) I pulled the sister fister on blakes sister

See Zane

4.

A bitch you can stick your fist inside of her pussy, no lube necessary. The word sister referring to any random female.

The girl i met last night i was down to fuck, until i realized it was Sister Fister.

See loose, pussy, slut, whore, loose pussy, skank, scallywag, chickenhead

5.

A person who fists peoples sister

amr fisted my dog

See me

6.

Nun hand fucker

I fisted the sister during confession