An arachnoleptic fit is the little dance you do when you walk through a spider web as you try to get it off of you. Often used as a verb or a noun. Can also be used to express distress in seeing a spider.
Darn, I'm just might have an arachnoleptic fit if I see that spider one more time.
Person 1:Is there something wrong with them?
Person 2:Nah, they're just having an arachnoleptic fit.