This Was Too Crazy Not to Test 🤯

Hinzugefügt: 2026-05-05

[00:00:02]Okay guys, we have our math book [music] here and our hair dryer which we're going to turn on on heat and let's test this.

[00:00:11]>> [music] >> What?

[00:00:15]They disappear. They all disappear.

[00:00:19]Oh my what?

[00:00:22]It works. Oh my god, who knew? Now you know.

[00:00:27]We're actually using a Thermosensitive gel pen.

[00:00:34]>> [music]