What is Twind?
1.
When two people that are not related discover that they are very similar in terms of extended family relations, interests and ideas, and sometimes they will say the same thing at the same time. They are, however, different in noticable ways, hence the "d" in "twinds".
Kath and Kim, synonimously: "Let's make cookies!"
Kath: "Oh my gosh, we are so twinds!"
See