The professor and Roberto were so scared of their sexuality that while on the road in the cover of night they took the chance to act on their saloon door syndrome.
In reference to when a baby is born, the outer part of the vagina flaps in and out for about a second or two. This gives the appearance of saloon doors opening and closing like in old western movies when a cowboy walks into the place.
Did you see that that chick give birth?! That baby came flying out of those saloon doors.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.