"If he became frustrated during his presentation he would abruptly stop and shake his fist in the air and curse God. "

I'm trying to imagine how that would go over at any of the entrepreneurial events I occasionally attend. Maybe the best vision comes from this stand-up comic (the very last bit).
http://thecomicscomic.com/2016/09/23/iliza-shlesingers-third-netflix-special-confirmed-kills-launches-as-she-embarks-on-late-night-development-deal-with-freeform/