My 2 used to crawl under the chest of drawers in my bedroom & smack our feet as we walked past - little rascals
One day when they were about 5 months old, I could hear the sound of a very distressed kitten coming from upstairs - sure enough my boy Rebel was stuck underneath the drawers so I had to lift the end up for him to get out.
The funny thing was that Marble, his sister could still fit under the drawers for a while after that episode & he used to get so cross with her.. It was very amusing for us humans though
Katie xx