half-sister-in-law

Spouse's half-sister or half-brother's wife.

My half-sister-in-law is a good person.

by Rwopazaq November 24, 2019

co-sister-in-law

The wife of one's spouse's brother.

My co-sister-in-law is a good person.

by Elivaldeq November 24, 2019

Oyster Sister

Two girls that have slept with the same guy

Emily and I both slept with Phil. We are now Known as oyster sister !!

by ChristyG October 26, 2019

eskimo sisters

when two females have kissed or had any sexual intercourse with the same male

omg we both made out with chad at that party last night!! WE ARE ESKIMO SISTERS

by ur dad 4206969 October 27, 2019

Coopers sister

Thick asf

Coopers sister is thick

by YoungPuss November 5, 2019

Little sister food

When you are hanging out with an age appropriate girl and you meet her little sister and it's a easier and guaranteed hook up

I've been out with this girl 3 times and last time I met her sister and shes just little sister food.

by BXGun November 10, 2019

Your sisters moustache

Your half gay brother in law who is of a different race.

Who is this gay black guy hitting on me? Oh that's just your sisters moustache.

by The lábinator January 9, 2020