Kneepkens

A last name with a Dutch origin. There are not very many people with this last name, somewhere around 2,000. The K is not pronounced, just like every other English word that starts with "Kn", but people still seem to mispronounce it. Teachers are usually the best at butchering its pronunciation.

My last name is Kneepkens, one of the best you can have!

Kneepkens by Kneeps May 5, 2009

Kneeples 

A condition inherent to older women (and some men along with a few younger fat people)
that causes one's mammary glands to gravitate to their thighs, therefore causing the nipples to
chafe one's knees.

Man 1: Why is that woman's knee all pink?
Man 2: Bad case of Kneeples, Merle. Take my picture with it!

Kneeples by Foo00 June 12, 2008

Kneefense 

When you’re trying to wake her up to get some, but she’s in the fetal position facing towards you and there’s no way to get to the goods, she’s playing kneefense

I was trying to get some from my wife last night, but she was playing some nasty kneefense.

Kneefense by Grammy Gobbler May 29, 2019