You got the nail gun out straight away, but understood that if you nailed the bulge you'd only tack the rug to a very angry monster.
[pic of you with nail gun, considering bulge]
So you ingeniously tacked the rug down all around the edges so the monster had nowhere to go.
[pic of rug all nailed down around the edges]
And set to kicking the living crap out of the monster.
[pic of you putting the boots to the bulge]
When suddenly...
[pic of quivering bulge, with word balloon]
BULGE: (mama)
Your heart melted. How could you be so horrible? Surely even the worst monsters are merely misunderstood! You began to pry the nails loose to make amends...
[pic of bulge near an open end of the rug, with a li'l baby doll face peeking out from under with word balloon]
BABY FACE: mama
For surely we will all learn a valuable lesson from your mistake.
[pic of monster rearing up, throwing rug off, a mass of tentacles and folded insect legs, rows of shiny black eyes and scything mouthparts, a child's baby doll held carelessly upside down in a curled, dripping tongue]
TOY DOLL: mama