Google says "likely due to irritation or temporary damage to the nerves in that area, often referred to as "paresthesia," and is usually caused by the muscle contracting forcefully and putting pressure on nearby nerves"

Description: It's rude to look at someone who's right next to you.-W.D. Gaster nicknames-(Wing Ding. Mystery Man.) (NOT JIMMY) Location-Jimmy's workshop translation site: https://lingojam.com/WingdingsTranslator