You can urinate
Previously, we saw Sam pull various tools into an equipment wheel, such as a ladder and a rope, to help him explore the environment. However, there is another unique tool in Sam's arsenal: the ability to urinate. Yes, you are not drunk. You read that right.
It looks like Sam's bladder will fill up over time, as you can see from the head up, showing the number of milliliters of urine in his bladder. According to Kojima, urination can be an instrument against enemies. Although, the specifics of how it remains unclear.
When Sam had finished peeking, a strange sponge sprang from the ground. Kojima noted that the world of Death Stranding is connected, so if more players urinate on the spot, then this sponge will grow completely and become a useful consumable item to pick up.