His first post is a video post - he took a recording of the traffic he was in, and then ended the short video with a self-cam. This was all accompanied by the caption, "It's hot ㅠㅠ".
SEE ALSO: L.Joe creates an Instagram account
Now that we have L.Joe and Changjo on Instagram, who do you think will be the next TEEN TOP member to join? Make sure you follow Changjo here!
[Thanks to everyone who sent this in!]