A mystery of the wall

On November 10, Jenny, my friend, and I found the mysterious sticky glue on the wall in the Farragut Hight School. It was exactly 3:37 when we found it. Also, a Coca-Cola can was stuck on the glue and stood against the gravity. Dizzy tried to get rid of the can from the glue, and when Jenny persuaded her to leave it alone, Dizzy reattached the can on the glue. And by that the can suddenly dropped to the ground at 3:46. So, to investigate this crime scene, I took some pictures of it.



[This is the glue]

[This is the can. Leaves are stuck on it.]



[This is where the glue and the can were found]

According to Dizzy's witness, the glue smelled like Vanilla. And we're still not sure about what happened. Do you guys have any idea about what's going on here?