Fill a spray bottle halfway with vinegar. You can use a funnel to help pour the vinegar into the bottle.
Fill a small pot with water. Put it on the stove at high heat for three minutes, or until bubbles begin to form at the bottom of the pan.
Pour the hot water into the spray bottle. The spray bottle should now have equal parts vinegar and water.
Spray the vinegar mixture on the wallpaper, and let it soak in for five minutes. The wallpaper should feel completely saturated.
Peel the wallpaper away from the wall, starting at the top and working your way down.