Reply #84: Not all, but a good majority of the ones of my aquaintance...

[AZCat]

have salted many a conversation with terms that are on par with "stupid" and "crapola" (or worse).

Some branches of engineering are strongly resisting any departure from the "blue collar" image that for so long enshrouded them, regardless of any actual transition in the nature of their work. "Earthy" language, IMO, is one way of fighting the pressure to become more "white collar" (ties are anathema too).