I Wasn't Expecting My Grandson To Be That Big

I'm no stranger to to randomly hooking up with strangers.I purposely dress slutty to get attention and it doesn't matter who it's from even my own grandson.what I'd like doing to my grandson was when i gave him a hug i would hold his face in my breasts.now he's 18 years old and bigger i pulled his head down into my breasts and juggled them in his face,and he done something unexpected.I was wearing a very slutty dress and fishnet tights and while i had his face in my breasts he put his hands around on my butt and squeezed.I wasn't expecting that and let out a giggle.Taking a step back i looked down and saw he was aroused.I pulled him towards me as i backed up against the wall he immediately shoved his hand up my dress and furiously rubbing my pussy . slightly parting my legs i basically begged him to get his dick out and i couldn't believe the size of it,i wanted to suck it before i let him have me. I couldn't even manage to take it all as it was 9 inches or more, teasing his shaft he pulled me up and bent me over ripping my dress off and ripped my tights apart and boy didn't i feel it when he entered me. a good hard pounding i was getting and i was loving it but the best moment came when we was on my sofa face to face and he was pounding me.when he mentioned he was going to cum i told him it's ok giving him the ok the ejaculate in me,as he ejaculated i was waiting for him to slip his dick out and be done but i was wrong.he immediately started fucking me again but less aggressive for 20 minutes we had sex in a few positions then came his second ejaculation, this time he was jerking off in my face but i took his dick and jerked him off in my mouth swallowing it all,I would of been ok if it was a one off but happy it wasn't.the following day we met up near my house and of course i had something sexy on for him minus my knickers and he soon had me in the woods up against a tree screwing me,I couldn't believe no one came to check the noise out,the sex is amazing and i can't say no.