Little Brother Syndrome

An ingrained fear reaction that younger siblings show towards an elder. If properly nurtured can result in reactions such as flinching when the older sibling walks past even though the younger is taller, bigger and stronger and 18+. This can also result in a defeatist attitude and outcome when in confrontations with the older sibling.

Luke was a victim of little brother syndrome. Even though he was bigger, stronger, faster and a black belt in karate he could never defeat his older brother in a tickle fight. Luke is 20 years old.

Little Brother Syndrome by Rincow May 4, 2011

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Little Brother Syndrome

When an older sibling brings a best friend into their home and the littler sibling thinks said person is their new friend and tries to impress them/flirt/or just won't leave you too alone for any reason

Your little brother has "Little Brother Syndrome" when he keeps trying to show your best friend his vast collection of Hot Wheels, even though said friend doesn't care and you both want him to go away.

Little Brother Syndrome by Dr. Upin Disbich July 19, 2015

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boner brother

When two people receive a boner at the same time for the same reason.

boy friend: "So I friggin' got a boner for a picture my girl friend sent me last night!"

best friend: "No shit?! I'm afraid I have bad news! I received the same picture last night . . . and the same happened to me. I hate to break it to you bro, but we are boner brothers!"

boy friend: "Son of a bitch whore!!"

boner brother by Adrian "the shiz" October 18, 2009