The bikinis my sister-in-law wore were getting increasingly skimpy.The last straw was when she came

The bikinis my sister-in-law wore were getting increasingly skimpy.

The last straw was when she came up on deck one day wearing the bikini my wife wore when she wanted to be bent over the captain’s chair and fucked.

As I reamed her pussy out with my cock, I grinned at my wife who was standing in the entrance to the galley and petting her pussy. Looked like the seduction of her sister worked.