The moment in every man's life when he questions the size of his schlong. Usually masculine insecurity occurs from anywhere to 3 minutes to a week. But it always goes away (hopefully). Masculine insecurity can be applied to other things as well, but we just mainly refer to those worries as "metro sexually challenged."
Tim: So it all started when I saw Johnny in the locker room holding a stick. Well it turned out it wasn't a stick.
Dave: Then what happened?
Tim: Then masculine insecurity hit me for a good 40 minutes.