Any grotesque sexual act that may cause "dick limping" is a "dick Limping" moment.
My "dick limping" moment was when my mom walked in on me jerking it to my step-sisters crusty panties.
I want to make one called "The limp dick offensive"
When a guy can't get it up in bed and you tell all his friends then post something on urban dictionary about it
Damn! You must have been pissed about the wet offensive to pull a limp dick offensive