Trapped Nerve Boner

A condition in the family of 'lookup' "Awkward Boner Situation (ABS)"

mainly applies to those who suffer from body aches, pains, knotts and trapped nerves

When a trapped nerve is releived a sudden blood rush leading to an erection

Person1: I have a pain in my shoulder
Person2: stretch it off and let's go for a walk
Person1: oh crap, can't go right now
Person2: why not?
Person1: ABS, I just released a trapped nerve boner