0 When she went to her sister's house to take shelter from the rain, her younger sister secretly had sex with her brother-in-law
0 The girlfriend had sex with the store manager because she was angry at her boyfriend for being so inconsiderate
0 The innkeeper was bored with her husband, so she had sex with the guests who came to rent the house
0 The father was away on a business trip, the son stayed home and fucked his stepmother for 3 days and 3 nights