You decide to hang the painting back on the wall.
The weight of the glue has altered the weight of the painting. Now on the nail, it triggers an electric fence. The fence turns on, as it emerges from the walls of the room. Then it reaches full power and starts to close in around you, as you stand by the painting.
When it gets so close the hairs on your skin stand up, you yelp hot and then scream.
There's a sound of fried chicken