Well, not off-topic, but unintended.
Here's the question:
Simple enough, but it has a catch. I tried to make it as solid as possible without turning it into a graduate-level physics problem, but now it's generating answers that are playing with my words and hostile comments.
The walls of the barrel are capable of absorbing at least 4 liters of water
Example comment: The magical water drum
@cst1992 So you discount his answer but accept when some else "fills" it with something other than water as well? That to me would suggest downvoting the question.
Frankly, I was angry.
What am I supposed to do? I can select only one answer, and I chose the one that fit the best(the number of votes reflects that, if I may say so).
Should I close the question?