No Apparent Reason Boner. When you're just sitting there taking a test or listening to a sermon in church and for some random reason, you get a raging hard-on. Hopefully you are wearing tight jeans or tighty-whities and not gym shorts.
I finished with my test early but had to wait to leave because I didn't want to jab anyone in the back of the head with my Narb as I was leaving my seat.
A recommended way to deal with a NARB that won't go away. Tuck your raging hard on up Under your belt and tighten down. If you don't have a belt, tighten your draw string. DO NOT USE this method if you aren't wearing a shirt.
In the middle of my brother's wedding, I had to perform a covert Timmy Tuck Under as the bride was walking down the isle.