Kinetics
Insects that live on cows. – Joseph Leff

King of Comedy
Not the clown prince. – Joseph Leff

Kingston:
2000 pounds/1000 kilograms of monarchs. – Joseph Leff

Kipper
Fish that is always asleep

Kith and kin
To show much affection. Example – I kith her when I kin

Kleenex
A daily nose-paper

Knapsack
Where the Sandman keeps his supplies.

Knife sharpener
A man who is busiest when things are dullest.

Knob
A thing to adore

Knotty pine
The craziest tree.

Know-how
Ability to speak an American Indian language.

Kooky
A small, sweet cake that goes very well with milk,

Korma
What you end up in if someone drops a pan of curry on your head