Bubble gum? Like do they chew space bubble gum that they could then smoosh in the holes?
In college, we'd use toothpaste for the holes left from nails in the walls we hung up our posters with.
Don’t try this if your toothpaste is the blue or green minty flavoured type. You’re welcome.
It's time to kick ass and chew bubble gum... and I'm all outta gum
Isn't the main problem finding the hole and not what should be used to fill the hole?