🍌 was the bomb.
One place I frequent has a bunch of custom emoji that were born out of meme conversations, e.g. :airquotes: is a picture of Dr Evil doing air quotes. We also have the girl from 'but why not both' that gets a lot of use. troll and :trollface: are regulars, the facepalm yellow face emoji with a Captain Picard uniform (and later, the Picard facepalm), a rolling eyes emoji, one of Philip J Fry holding out money (in the shut-up-and-take-my-money pose)...
Oh, and we mustn't forget Inigo Montoya with :you-keep-using-that-word:. It is a very silly place with a lot of its own internal memes and in-jokes like all the best communities. For example, we get far too much mileage out of a person with their hand up :um-actually:, the same person with their hand half lowered :um-nevermind: and the um-actually guy with a necklace wrapped around the hand because years ago, someone went to call someone else a pedant, and it was typoed as pendant and this stuck. Needless to say pendant is a regular feature too.