To Make Someone’s Skin Crawl

Read the following e-mail and try to guess the meaning of the idiom in bold:

Dear Michelle,

Are you going to the Halloween party tomorrow?
I am so excited about it! I don’t know what I will be, though! I have not found a costume yet! I want to wear something that will make people really, really scared!
I want to make their skin crawl! Could you give me any suggestions?

Thank you so much! I hope to see you there!!

Ligia

What do you think “To Make Someone’s Skin Crawl” means?

Meaning: This idiom means to disturb or bother; to frighten or disgust.

This idiom was found in the LSI book Speaking Savvy.

What are you going to be for Halloween?