by Bubby Q May 4, 2015

A scientific term used to describe two or more people who shares, in appearance, virtually the same face. There are four subgroups of the following word heterofacial, homofacial, bifacial, and opposing facial twin(s).
Homofacial Twin(s): The most often seen of the four, homofacial twins are two same sex siblings who share, in appearance, virtually the same face. These types of siblings do not originate from the same egg cell.
Heterofacial Twin(s): The second most often of the four, heterofacial twins are two opposite sex siblings who share, in appearance, virtually the same face. These types of siblings do not originate from the same egg cell.
Bifacial Twin(s): One of the rarest of the four, bifacial twins are two same sex people who shares, in appearance, virtually the same face.
Opposing Facial Twin(s): The rarest of the four, bifacial twins are two opposite sex people who shares, in appearance, virtually the same face. These types of people are not related.
Homofacial Twin(s): The most often seen of the four, homofacial twins are two same sex siblings who share, in appearance, virtually the same face. These types of siblings do not originate from the same egg cell.
Heterofacial Twin(s): The second most often of the four, heterofacial twins are two opposite sex siblings who share, in appearance, virtually the same face. These types of siblings do not originate from the same egg cell.
Bifacial Twin(s): One of the rarest of the four, bifacial twins are two same sex people who shares, in appearance, virtually the same face.
Opposing Facial Twin(s): The rarest of the four, bifacial twins are two opposite sex people who shares, in appearance, virtually the same face. These types of people are not related.
by definemaster324 November 29, 2016

"Twin" is a word used when reffering to someone an indvidual is close with or share numerous similiarties with in behavior. It is not the biological term that most people are aware of. Rather, it suggets apprecication towards someone you get along with.
by fairy20 September 10, 2025

"Hey Randy!"
"What?"
" My GF bought a Strapon last night and I gave her a twin towers!"
"What the FuCK!
"What?"
" My GF bought a Strapon last night and I gave her a twin towers!"
"What the FuCK!
by Big nigga chain cue the fourth March 14, 2023

When two men sit with their legs straight forming two X's and a girl sits in between with one mans penis in her vagina and the other mans penis in her ass.
by Masster Blasster July 6, 2015

Gay boy twins- two people who constantly make fun of each other for being gay and act in homosexual ways to each other but aren’t actually gay. Gay boy twin activity’s include sending nudes of everything, making gay collages dedicated to young Leonardo Decaprio, and repeatedly calling each other gayboys
Lincoln: *sends nudes of his dishwasher*
Myah: you’re gay asl
Lincoln: not as gay as when you colored your peppa pig toy with rainbow marks
Myah: omg we gayboy twins
Myah: you’re gay asl
Lincoln: not as gay as when you colored your peppa pig toy with rainbow marks
Myah: omg we gayboy twins
by xtlanta October 8, 2017

Another word for tribadism--when someone rubs their vulva against another vulva or set of genitals in a non penetrative manner.
by RedefiningLesbianism November 28, 2019
