I dont know if anyone has ever been in a room of people trying not to laugh. This happened to me a couple of weeks back.
We had this asian lecturer, nice enough guy and really tried hard but certain phrases he didnt handle well. His race probably doesnt come into it but it might've added to the amusement. Anyway he was discussing form secondary protein structures take, including one called the 'Zinc Finger,' so named because it looks like a finger.
This is the zinc finger
Yeah. Looks like a dick and balls.
As he said 'Named because it looks like a finger' there was a unique moment where the entire class seemed to catch each others eye and desperately try not to burst out laughing