70 years old granny rides stranger's cock

It was my mom birthday she just turned 68 it was just us 2 we was at home she was dressed for bed, I when to give her a hug she whispered you want to sleep with me tonight I said ok I climb in bed I was only wearing a pair of underwear she was laying there with her back to me as I put my arm around her she had pulled up her nightgown to her hips I noticed she had no panties on she grabbed my hand and she pushed it to her hair pussy she whispered if you wanted to finger me it's ok

She's making my dick throb