A male who shares the same birthday as you. You were born on the same day of the same year. Even though you are not true brothers, this is a significantly close bond
See also Birthday Sister
Brady: Happy Birthday James.
James: Happy Birthday to you too, Birthday Brother.
by Pablo2342 May 31, 2010
6 Words related to Birthday Brother
Two people that were born on the same day. They do not have to be blood relatives.
Paul and Scott were both born on June 30, therefore they are birthday brothers.
by stupidass5000 July 10, 2008

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