I don't think this really needs additional context or commentary. All you need to know is that Super Mario Bros. turned 25 yesterday.
etherlad: Happy 25th anniversary, Mario. We're sorry, but your cake is in another castle.
wilw: Happy 25th birthday, Super Mario Bros! Your cake is in another castle.
etherlad: @wilw DAMNIT WIL I JUST SAID THAT
wilw: @etherlad I'm fairly confident that you and I are not the only exceptionally clever people who will come up with this joke today.
etherlad: @wilw Touché. Can we at least tip our hats and clink our glasses in honor of our exceptional cleverness?
wilw: @etherlad Indeed we can. Just let me adjust my monocle first, old chap.
etherlad: @wilw Jolly good, old bean.
wilw: @etherlad *clink*
etherlad: @wilw *clink* *mustache twirl*
This is all, of course, set up for this.
(thank you, Ian, for making me laugh)