I agree that it is inappropriate but assault? Come on. The guy didnt hold someone down did he? Did he restrain someone or strike them?
That would be battery, as I understand it.
Vulgarities? Spit? Ridicule?
Awkward and inappropriate but harmless and amusing.
Unless the women have been assaulted before, or are sensitive about their boundaries, or just don't want to be touched. It's creepy and demeaning.
Don't let the nervous giggles fool you; they are signs the women are profoundly uncomfortable.