If they had any wit, they could turn this around by claiming that for unrelated, unmarried people to touch each other is “not moral” (as different from “immoral”). And they could pound the lesson home by suggesting that many women loudly complained about “improper touching” by Muslim men recently, which is only different based on “body part”.
Would these same teachers be offended if our standard greeting was to reach a hand down the front of the other person’s pants? This is the level of discomfort we experience when someone outstretches a hand at us.
“This is the level of discomfort we experience when someone outstretches a hand at us.”
If someone offering you a hand to shake distresses you as much as having your genitals groped, then you need psychiatric help.