1. A person that become intoxicated after a very small ammount of alcohol.
Person 1: Hey, look at Dart, he passed out! How much did he have?

Person 2: Haha, he had one beer!

Person 1: Haha, that kids a one beer wonder.

by Mr. Mackey, umm kay April 11, 2006
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If a person drinks one beer or just a little alcohole, and there already drunk and/or stmboling around singing and shit.
After one beer Jeff was aready singing The Star Spanger Banner in the middle of the street. Tha nigga is a one beer wonder
by Jake September 21, 2004
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