When two people have similar birthdays and the third person has their birthday on one of the others half birthday.
Omg we are twins and a half.
When siblings born of different years share the exact same birthday
though being born ten years apart my baby brother & I share the same birthday thus making us Caribbean twins
In medical circles can refer to twin reversed arterial perfusion, or a subset of conjoint (siamese) twins. Two fetusii develop conjoined, but one (the parasite) does not fully develop and is wholly dependent on his host brother.
In team management refers to a redundant slacker who performs an identical, complete subset of the effort performed by a more capable worker.
a: we have the same job! we're like siamese twins!
b: nah, I do twice as much. you're a parasitic twin
When one twin is clearly more attractive, cool, or likable than the other twin. After suffering through a lifetime of people asking where the "hotter" or "funnier" twin is, the less desirable twin inevitably forms a "chip" on his or her shoulder, thus making the chip twin even less enjoyable to be around.
1.
Party host: "Where is Andy? I love that guy. He's hilarious."
Chip twin: "Why is everyone always asking me where Andy is? How should I know? I don't know where he is all the time! I'm just as funny as he is!"
Party host: "Listen chip twin, you're not invited unless you are with Andy. Robin didn't go around trying to fight crime on his own."
2.
Guy at bar: "So how do you two know each other?"
Chip twin: "We're twins."
Guy: "No, seriously. How do you know each other?"
Chip twin: "We are twins."
Guy: "Come on. Seriously, how do you know each other?"
Chip twin: "You're an asshole."
*Twins walk away*
Guy: "What did I say?"
*Guy 2 walks up*
Guy 2: "Fucking chip twins, man."
Those dumb dorm room sheets. Or a band. You decide.
"yo, why is everyone talking about Twin XL??"
"idk, do you follow bands or are you in college?"
A boy who stuffs a dildo up his throat until he coughs up blood. While fingering a rhino
Why do you act like quentins twin?
An awesome friend who might as well be your twin.
You're my twin-chan.