(ADJ) When someone makes a joke from your joke and makes it not funny, then they have piggy-backed your joke. The joke usually goes from being funny to not being funny.
He totally ruined your joke by making a Piggy-BackJoke from it.
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."