An acronym used to shed any responsibility for possible hurt feelings after trash talking the Saskatoon Dinosaurs goalie. Originally the complete phrase was used; "Just kidding Lewis" but to reduce the effort and keep up with the times it was eventually shortened to JKL.
You're a sieve. JKL... You go down as much as Knutson's mom. JKL ( In this case the JKL was used both for the intended target and the unfortunate collateral of referencing Knutson's mom.)