Q:  How does a Snowman get to work?
A:  By icicle.

Explanation:  Take a look at the answer- by icicle.  If you say the two words quickly you get the word bicycle.  An icicle is ice that is formed by dripping water, like ice that hangs off a roof in the winter.  Again, here the funny part is playing with the words “by icicle” and “bicycle.”