All vacation, mom had been teasing me with that big ass of hers. Everywhere we went, she’d “accidentally” let her skirt ride up, and she’d spend half her time at the beach slowly applying sunscreen to her cheeks. She must have thought when we all went out on the cruise I bet she thought I couldn’t try anything with so many people around, but when she went below deck for another drink that was my shot. I whipped my drooling hardon out and told her she could either help make up for keeping me hard this long or I would send dad the photo I got of her drunkenly flashing some college guys. Mom kept her cool though, and sucked me off so good I shot all over her face and neck. She started getting ready to go above deck, but when she leaned over to get some tissue my dick was at full mast again from the view of that sweet ass. I had to know what it looked like without her tiny bikini, so I lifted it up and slid my dick into her crack. She was shocked at first, but she had to keep her voice down what with the party still going just outside the door. She could have easily told me no, but mom pushing those thick cheeks back into my dick gave me her answer. I shot my pent up load inside my own mother. She was trying to cover the sound of her own moaning with cum covered tissues as I fucked a baby into her.