noun | kek·ak
Keccak is like the redheaded stepchild of hash functions - it's the algorithm that powers Ethereum's proof-of-work consensus, but it's not as well-known or widely used as its more famous siblings like SHA-256 or Scrypt. It's like the Ringo Starr of cryptographic primitives - it gets the job done, but it's not the one you think of first.
Example
"I always get Keccak and SHA-3 mixed up - they're like the Olsen twins of hash functions. Or was it the Winklevoss twins? I can never keep my crypto celebrities straight."
"Keccak? More like Kek-kek, amirite? Sorry, I'll show myself out..."