Prof. of Algebra: kiss is two divided by nothing.

Prof. of Geometry: kiss is the shortest distance between two straight lines.

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

Prof. of Physiology: kiss is the juxtaposition of two orbicular 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 Engineering What is a kiss?

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