Funniest thing I ever saw was husband and wife team undergoing a 737 type rating together in the sim. Taxiing out toward the runway, wife left seat, husband right seat. Husband does full control check including full aileron reversal at same time as full back stick. The control wheel horn clobbers the wife's right boob on the way through provoking a sharp retort of "Getting a bit initimate again, are we". Later the husband is attempting an NDB approach as PF and making a hash of it. Wife turns to the instructor (me) and says "His flying sucks, doesn't it?"
On another occasion, colleague instructing a really very attractive young lady in the 737 simulator. Like some well known tennis players she was a "squealer grunter" and when coping with engine failures on take off she vocalised if you know what I mean. My colleague was quite turned on by this and as he admitted later "just had to give her a few more engine failures."