People on TikTok are only just realising that others can do a weird trick which makes ‘thunder’ inside your ears. The bizarre sound is caused by a muscle deep inside the ear, but not everyone is able to control it voluntarily. Ear trick ‘sounds like thunder’ Everyone started talking about the phenomenon this week after a viral video in which a woman said: “You know how if you tense your ear drums it sounds like thunder… apparently not everyone can do that.” In the comments, TikTok users are realising they do that too, with one person writing: “Yep and I can hear it when I’m yawning.” “THAT’S W…