Before It Starts

A man comes home from work and sits in his recliner in front of the television.
"Hey, wife!" he yells. "Gimme a beer before it starts!" She gives him his beer. Fifteen minutes pass.
"Hey, wife!" he yells. "Gimme a beer before it starts!" She gives him his beer. Five minutes pass.
"Hey, wife!" he yells. "Gimme a beer before it starts!"
"Hey, you've already had two beers in twenty minutes! Don't you think that's a lot? I'm not getting you another!"
"Now it starts."