Funny Joke: A couple was sitting at home

A couple was sitting at home one evening, watching TV and enjoying a glass of wine. Suddenly, the doorbell rang. 

The husband got up to answer it and found their neighbor standing on the doorstep, looking flustered.

"Hey, sorry to bother you guys," the neighbor said, "but I was wondering if I could borrow a cup of sugar?"

The husband looked at his wife, then back at the neighbor and said, "Sure thing, but you might not want to use it all at once.