42,000

Becky: "Ugh, your forehead is filthy."

Me: "Ok."

Becky: "You really should wash your face more often."

Me: "Yeah, I probably should."

Becky: "You know that for night you go to bed without washing your face, your skin ages seven years?"

Me: "Seven years? That doesn't sound right...you sure it isn't seven days?"

Becky: "No, I'm pretty sure it's seven years."

Me: "Well, that means if I didn't wash my face an average of 300 times a year, for 20 years, that makes me 42,000 years old!!"

Becky: "No."

Me: "20 years, times 300 days, times 7 years per night equals 42,000."

Becky: "YOU aren't 42,000 years old, but your face is!!"