Kek

Kek is a slang term for laughter deriving from Lel (wich is a hybrid of Le and Lol from /sp/) the inside joke has to do with mocking how outsiders from 4chan at the time didnt understand rage comic culture either way the term Kek would make its way to way pass lel making new stuff such as Jej Fef Beb and creating the Kekistan meme eventually kek would be linked to Pepe alongside a ancient egyptian figure called kek whose a frog on top of that

Topkek

Theres also a topkek. Wich is basically the kek variant of toplel toplel by itself comes from topgun its all really a bunch of trollface inside joke stuff