TFW you have a shitty night's sleep, are tired all day, take a nap and BAM you're Superman.
TFW you bombed your last exam and your professor's all "you know what? I'm going to be awesome and let you replace that exam you just shit the bed on with your final exam's grade. Aww what the heck, why not drop your lowest quiz, as well!"
TFW an MMO you put countless hours into and followed for years goes offline and all of a sudden you have a hole in your life shaped exactly like that MMO. Same for any TV shows, comics, movies, regular video games that you follow for a large part of your life.
TFW you pull off a clutch ult that wins you the match in Overwatch.
TFW you hear "RYUJIN NO KEN O KURAE!" but instead of running away like a pussy, you just flashbang + FTH his shit.