Catching My Mother-in-Law…Or Was I Trapped?

My girlfriend has a couple of sisters and i had my fantasies of them, but i never really got into her mother. she’s a bit loud and obnoxious (like one of her daughters), but she is still very cute and has a nice body for a 50yr old.

i first started fantasizing of her because i was driving her back to the house and she was in the backseat over my right shoulder. she was wearing a dress, but i guess through the ride, it kind of bunched up a bit. we arrived at the house and i turned to say goodbye, she thanked me and spread her legs to get out and i got a glimpse of her pussy. holy fuck, she had on the garter and thigh high hose, but there were no panties! i could see a strip of pubic hairs, nicely trimmed, pointing towards her pussy lips. after all her kids, it looked really hot; not much in lips, mostly just the crack. i tried not to show my surprise, but it may just me, but i swear she held that position just long enough so i could get a good look. she got out of the car and slinked up the steps, swaying her ass, was this a sign?

a couple of weeks later, i was at their house while everyone was at work, they own a small business so usually no one is home in the afternoon. im in and out all the time, but no one reallly expects my presence. i heard the door open and my GF’s mom came home talking on her cell. i tried not to disturb her, but she was speaking really loud and talking about how she was gonna be real “nasty and dress like a slut”.