A Guaranteed Location

Three women are sitting in a beauty parlor, chatting about their husbands. The first woman sighs and says, “Last night, my husband told me he was going to his office. But when I called, they said he wasn’t there!” The second woman shakes her head and adds, “Same here! My husband said he was heading to his brother’s house, but when I called, he wasn’t there either.” The third woman smiles confidently and says, “I always know exactly where my husband is.” The other two women look at her, in disbelief and exclaim, “That’s impossible! He must have you completely fooled!” The third woman chuckles and replies,
“Oh, not at all. I’m a widow.”