When you put peanut butter on your dick and have a girl with a nut allergy suck it. As she deepthroats you her airway will close in and gently hug your dick until you nut. Having multiple epi-pens for multiple sessions is considered a pro move
That girl Sally has a nut allergy so tonight I tried the nutaphylaxis move with her. Her throat was so tight is was amazing.
The ability for something to be so awesome you can nut to it. Normally this should be used in context for a possession though it can be used to refer to a hot girl.