Prof. of Economics - Kiss is that thing for which the demand is aways 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 Physiology - Kiss is the juxtaposition of two orbicularisoris muscles in the state of contraction.
Prof. of Dentistry - Kiss is infectious and antiseptic.
Prof. of Philosophy - Kiss is the persecution for the child, ecstasy for the youth and homage for the old.
Prof. of Comp. Science - What is a kiss? It seems to be an undefined variable!
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.