A fork of Rural Dictionary
Far beyond the reaches of "bonerkill", to enter a state of permalimp you must see something (usually a sexual act) so horrifyingly terrible you will be unable to achieve a state of erection for a permanent basis.
After being baited and trapped by a fake link, I was presented with five elderly men commiting an act so terrible, I have gone Permalimp. My girlfriend has left me, I get lol'd at in the locker rooms, my parents have abandoned me, and I have lost all my friends.