Running etiquette

This is a question of etiquette whilst running (if there is such a thing)

Question 1

When out running, trail or road, if another runner stops at a muddy puddle to negotiate it, is it good etiquette for another runner to shove or push the other runner into the said puddle?

Question 2

Having pushed said runner into the muddy puddle, is it good etiquette for the pusher to then point at the now muddy pushee and scream with manic laughter "You knew I would do that"

Just wondering