A Mother in Law decides to test her three Son in laws for their good nature.
For this she goes for a walk by a river with the first son in law; jumps in.
He saves her.
Next morning he finds a Toyota Corolla parked outside his house with a note: From your Mother In Law.
Next she goes for a walk by the river with the second son in law who jumps in.
He too saves her.
The next morning he also finds a Toyota Corolla parked outside his house with a note: From your Mother In Law.
Next, she goes for a walk by a river with the third son in law & jumps in. He just laughs and walks away.
Next morning he finds a BMW M5 parked outside his house with note:
From your Father In Law!