I saw my brother's wife masturbating with her toys when I was living with them for a while. it was such a turn on, I started looking for opportunities to peep. one night after I showered, I walked by their bedroom and saw her fucking a dildo while my drunken brother snored beside her. I got hard and started stroking as I watched. I didn't realize the hall light behind me was throwing my shadow on the wall at the foot of their bed. she smiled and spread her legs wider. after a couple of minutes, she motioned at me to come in. I walked over to the bed and we continued rubbing ourselves with my brother between us. my cock was dribbling precum, and I rubbed the tip on my brother's lips. they opened and I stuck my dick in and started fucking his mouth. she giggled at first, then started stroking her pussy faster. when she came, so did I loading my brother's mouth with sperm. he swallowed some and drooled out the rest. she leaned over him and sucked my cock clean, then pushed me away as she kissed him and licked my cum off his face. he started stirring, so I backed out and went to bed.