1 Stop the bleeding on a wound. Shove that pillow near the open cut and it will block the bleeding but ruin the pillow :(.
2 Slap you Mother-law in the face without doing much damage.
Don't like your MIL? Well, now you can smack her without getting sued.
3 Butt races.
Put butt on pillow, put pillow on top of the stairs and weee!
4 Hmmm maybe only 3 things.
5 See above/