Ice Fishing

On her birthday, a blonde was given a fishing rod. She decides to use the gift on the weekend and have a good time, so she goes and buys fishing gear and sets out. 

She goes to what she thinks is a nice fishing spot and drills a hole, then puts her rod in.

She hears a man say, “There is no fish in there.”

So she goes someplace else and drills and puts her rod in.

Then hears a man say in an irritated tone, “There is no fish in there.”

So she repeats the process a third time and again hears the man tell her, “There is no fish in there.”

Angry, the blonde gets up and faces the man and says, “How do you know there is no fish in there?”

The man replies, “This is an ice hockey rink.”