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'''Basic Trope''': A character's birthday is forgotten by one or more of their friends.
* '''Straight''': Alice forgets Bob's birthday.
* '''Exaggerated''': Not once has anyone Bob has called a friend - or even an acquaintance - ever remembered his birthday.
* '''Downplayed''': Only a few people remember Bob's birthday, but they don't make as big a deal of it as he would like.
* '''Justified''':
** Bob's birthday comes during a time of the year when Alice is busy.
** Alice has had a lot going on lately, so she forgets Bob's birthday.
* '''Inverted''': Bob has to be reminded that it's his birthday.
* '''Subverted''': Nobody acknowledges Bob's birthday. When he gets home from work, he finds [[NotSoForgottenBirthday his friends at his place]] for a SurpriseParty.
* '''Double Subverted''': They're there for Bob's roommate Charles, who shares a birthday with him. They forgot it was also Bob's birthday.
* '''Parodied''': [[TheFriendNobodyLikes Zach]] is the only one to remember Bob's birthday. Bob ignores him.
* '''Zig-Zagged''': Charles mentions that they were playing coy - they indeed remembered both of their birthdays.
* '''Averted''': Nobody forgets Bob's birthday.
* '''Enforced''': ???
* '''Lampshaded''': "Really, you forgot my birthday? After everything I've done for you?"
* '''Invoked''': ???
* '''Exploited''': David is trying to break up Bob's friend group, so he suggests that his friends forgot his birthday out of spite.
* '''Defied''': ???
* '''Discussed''': ???
* '''Conversed''': ???
* '''Implied''': Bob is seen dolefully EatingLunchAlone at a restaurant, wearing a party hat, at a large, empty table.
* '''Deconstructed''': Bob takes the forgotten birthday as a sign that his friends wouldn't care if he lived or died - so he [[DrivenToSuicide offs himself]].
* '''Reconstructed''': Bob realizes that he isn't upfront with others about his needs and resolves to become a better communicator.
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Back to ForgottenBirthday.
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%% Optional items, added after Conversed, at your discretion:
%% * '''Played for Laughs''': ???
%% * '''Played for Drama''': ???
%% * '''Played for Horror''': ???