Sponge! ๐งฝ๐ฆ
Explanation: A sponge is full of holes, but despite that, it has the amazing ability to hold water. It's like a magical water-holding Swiss cheese! ๐ง๐ง So, next time you're puzzled by the question, just remember that the mighty sponge has got your back! ๐๐ผ๐