KISS definition

Can you tell me the definition of a "kiss"? How do you describe "kiss"? Here are some of the funny explanation of what a "kiss" is. Educated experts tried to describe a single word "kiss" into their own words of expertise. Found this on berro.com.

Definitions of a KISS:

• Prof. of Algebra: a "KISS" is infinity, because it is two divided by nothing (not zero).
• Prof. of Geometry: a "KISS" is the shortest distance between two lips.
• Prof. of Physics: a "KISS" is the contraction of two mouths, due to the expansion of the heart.
• Prof. of Chemistry: a "KISS" is the reaction of an interaction between two hearts.
• Prof. of Zoology: a "KISS" is the interchange of friendly salivary bacteria.
• Prof. of Physiology: a "KISS" is the juxtaposition of two orbicularis oris muscles in the state of contraction.

• Prof. of Dentistry: a "KISS" is both infectious & antiseptic.
• Prof. of Accounting: a "KISS" is a credit because it is profitable when returned.
• Prof. of Economics: a "KISS" is that thing for which the demand is always higher than the supply.
• Prof. of Statistics: a "KISS" is an event whose probability depends on the vital statistics of two minds and hearts.

• Prof. of Philosophy: a "KISS" is persecution for the child, ecstasy for youth, and homage for the old.
• Prof. of English: a "KISS" is a noun that is used as a conjunction; it is more common than proper; it is spoken in the plural and it is applicable to all.
• Prof. of Computer Science: What is a "KISS"? It looks to be an undefined variable, whose possible value can equal love.
• Prof. of Architecture: a "KISS" is a process which builds a solid bond between two dynamic objects.

Is not a kiss the very autograph of love?
~Henry Finck

(article source: berro.com - image sources: Chris Craymer, weheartit.com, Ellen von Unwerth)