When two people of different age do everything together and hang out with the same crowd and don't find anything weird about it. The 2 usually look very alike and are hard to tell apart.
"I always see those 2 together, its like they're twins"
" I know, and ones 3 years older than the other... They're such Danahy Brothers!"
" I know, and ones 3 years older than the other... They're such Danahy Brothers!"
by Flordiagrl85 July 13, 2009
Get the Danahy Brothers mug.an individual that is always excessively loud and climbs on everything in sight. Not only does he have no sense of privacy, he steals all of your food and blames it on the dog.
by nicole*da*goat August 20, 2018
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When you like a member of the opposite sex. Eventually wanting to be in a relationship with them, but they shut you down with the "I love you like a brother/sister"
Brother/Sister Zone:
Guy: Derpina, will you go out with me?
Girl: Derp, I'm sorry, but I love you like a brother that I've never had, and I don't want to ruin that!
Guy: Derpina, will you go out with me?
Girl: Derp, I'm sorry, but I love you like a brother that I've never had, and I don't want to ruin that!
by tinkerbelleh_01245 December 14, 2012
Get the Brother/Sister Zone mug.by stupidass5000 June 29, 2008
Get the Birthday Brothers mug.by thanks for letting us October 7, 2019
Get the brother mug.When a nice person has many attractive friends of the opposite sex, but all view him/her in a brotherly light, and have no romantic feels for him/her.
Although James had many female friends, he could not get any to date him because of his unfortunate case of brother syndrome.
by diodefuego August 28, 2010
Get the Brother Syndrome mug.Frank went to hundreds of brothels and had sex with thousands of prostitutes, he is a real Brothel guts.
by Cobber1 October 21, 2013
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