You’ll need an old pair of jeans , some card board, and tape. We just used a few old boxes & cut out large rectangles . Roll up the card board to fit into each leg. Release the roll to fill the leg. Then tape so that the card board stays in place inside the jeans. Do the same for the top waist area of the jeans as well.
If you want to use this for a Halloween game it would be so much fun to add some red crumpled construction paper or gift wrap tissue to the top of the jean waist! But since my kids are still small & didn’t feel like “scarring them for life” (yet!) we just left it as is.
Toss what ever you like in to the pants to make this a great game. We made ants out of paper and pipe cleaners to have an “Ants in your pants” game. But for those who don’t scare easy why not toss body parts or red paper balls to give it a more gross out theme.