Johnny's Excuse For Not Attending School

Teacher: Why were you absent for last 2 days? Johnny: I have just one pair of underwear, both of it had to be washed day before yesterday. Can't come to school without wearing one. Teacher: Even if I believe that, why were you absent yesterday? Johnny: While passing by your house yesterday saw 2 panties of yours left to dry outside, thought you wouldn't be at school either.