A Snowman.
Because they don't like the smell of Derry air.
A cusstomer
Here is mine: Q: Where do snowmen dance --------- A: At the snowball. Best joke at the end of a Popsicle stick
He heard the snow-blower was coming.
Fire in the hole!
Because the commanding officer told his soldiers: "Fire at will"
A sanitary owl
A nervous wreck!