A woman has a problem with her closet door - it's falling out every time a bus passes by. So she calls a repairman.

The repairman comes and sees that indeed, the door falls out every time a bus passes by.

"OK, I'm going to take a look at this, just close the door behind me," and he steps into the closet.

At that time the husband comes home from work, opens the closet and finds the repairman.

Husband says, "What the heck are you doing here?"

Repairman replies, "You won't believe it, but I'm waiting for the bus."