Eeno
Eeno are snowy creatures which float around on the ground in puddle-like forms. When Link approaches one, it will quickly rise up and begin to pelt him with snowballs.
Some Eenos are larger than others, and can toss snowballs larger than the average person. When attacked, these creatures will split into three smaller Eenos. Of course, a Fire Arrow will still defeat these large Eenos in a single attack.
In Majora's Mask official walkthrough, there is a section called "Tickle Me Eeno", a direct parody of the toy Tickle me Elmo, or the more gothic version: "Tickle Me Emo".