According to TikTok user @guesswho_718 they discovered that if you're a child from the 70's, 80's or 90's you hold your hand up to your phone in a phone receiver like gesture. Thump to ther Ear Pinky to the mouth like an actual phone receiver.
If you were born after the 90's, they will hold their hand to their ear, fingers and thumb pressed together like an iPhone.
Are you ready to change the Hand Gesture?
Check out the video below.