yesterbirthday
When your or someone else's birthday was yesterday.
Brian: I had a great birthday yesterday.
Fred: Happy Yesterbirthday Brian!
Brian: Yeh....thanks.
Fred: Happy Yesterbirthday Brian!
Brian: Yeh....thanks.
happy yesterbirthday
This is said when you forgot to tell a person happy birthday, and only remember the day after.
Bill: I had a great birthday yesterday...
Fred: Shit! Happy Yesterbirthday!
Bill: Yeh...thanks.
Fred: Shit! Happy Yesterbirthday!
Bill: Yeh...thanks.