Using a Jacques Tati film to demonstrate his concept, Trevor explained to his audience: "See, like this bit here where the dialogue is just 'wah, wah, wah'. Like the teacher in the Charlie Brown cartoon, just talking nonsense."
The stony silence was broken by one bemused, rather than amused, German. "They are speaking German."
Our second winner Andy Turner of Sixsigma PR, was working elsewhere when he took a photographer along to a pitch for a law firm. The snapper only had one suit, which Andy persuaded him to wear.
Having got a bit carried away with the corporate look, said photographer decided to take along a telescopic pointer. He reached into his suit pocket and pulled it out with a flourish - and a pair of women's panties attached to the end.
The photographer went on to explain to the shocked audience that he'd last worn the suit to a friend's wedding and he and the wife had got a bit frisky in the taxi on the way home.
Both entries win a much-needed place on Roffey Park's 'Powerful Presentations' course, worth £1250 each.
Roffey Park (www.roffeypark.com) is one of Europe's leading executive education and research providers and is set in more than 35 acres of parkland grounds near Horsham, West Sussex.