The one that happened most often to me as a kid was when my undershirt would roll up into my armpit and drive me crazy https://image.nostr.build/4c4c017b650dd3191b685d3e68ae87ebd0743cfccf41d7ef1ff7726ae43cb763.gif  

 Yesss I remember this too! Back when my chest was as flat as a board I would wear a vest under my school shirt 🥹