Definitions of Kiss

Prof of Economics : Kiss is that thing for which the demand is always higher than the supply. 

Prof. of Accountancy : Kiss is a credit because it is profitable when returned. 

Prof. of Algebra : Kiss is infinity because two divided by nothing. 

Prof. of Geometry : Kiss is the shortest distance between two lips. 

Prof. of Physics : Kiss is the contraction of mouth due to the expansion of the heart. 

Prof. of Chemistry : Kiss is the reaction of the interaction between two hearts. 

Prof. of Zoology : Kiss is the interchange of salivary bacteria. 

Prof. of Physiology : Kiss is the juxtaposition of two orbicularisoris muscles in the state of contraction.

Prof. of Dentistry : Kiss is infectious and antiseptic. 

Prof. of Statistics : Kiss is an event whose probability depends on the vital statistics of 36-24-36. 

Prof. of Philosophy : Kiss is the persecution for the child, ecstasy for the youth and homage for the old.

Prof. of English : 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 Architecture : Kiss is a process which builds a solid bond between the two dynamic objects 

Prof. of Comp.Science : What is a kiss? It seems to be an undefined variable