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Eight month birthday
(i.postimg.cc)
Transcript
A tweet by Ivanka Trump @ivankatrump saying "I cannot believe that Theodore is eight months old today! Happy birthday little teddy bear!" with an admittedly cute picture of a child smiling. It has a reply from @blacknmild saying "this isn't how birthdays work"
Anniversary comes from annum, which means year, so you could have a monthversary maybe
How can you be so sexist that you exclude women by celebrating men only?! /s
To be slightly absurd: Every day is a day you are one year older than the same day the previous year
We have "årsdag" in Swedish too, but it's a general term used for stuff other than birthdays ("födelsedag")