At wintertime, you have your brother make a snowball around you, and push you down a hill, pretending you've got the ice and ice combo.
When you see a blowfish you think it's going to explode at any time.
You try to swallow your pet hamster, saying that it's a Nruff.
You're paranoid of water because 'Acro lurks down there!'.
You put a mallet in your bird's cage, expecting him to pick it up and pretend to be Dedede.