The phrase "to strip off" means to remove or take off an article of clothing, such as a shirt, pants, or other garment. This action can be done intentionally, like when changing clothes for a swim or taking off layers in warm weather, or it can happen accidentally, like if something spills on the clothing and causes it to stick together, requiring removal of one piece before the other can come loose. The phrase is also used figuratively to mean removing something else, such as stripping wallpaper from a wall or taking off layers of paint.