Go read this in-depth well documented experiment testing an age-old proverb; it will only take you a few minutes and your day will be slightly enriched for having done it. In the experimenter’s own words:

We’ve all heard the old saying “it’s like nailing jelly to a wall” to describe a task that is very difficult or impossible. But is our view of the difficulty of this task justified? Has anybody actually tried nailing jelly to a wall? In this experiment I attempt to establish, one way or the other, the validity of the old proverb.