I fuck step-dad until his ass is glowing because step-mom is too prudish!

The other day I was invited to my step-parents' home and sat on the couch with my step-father. When we were undisturbed, we came up with the topic of sex and he is happy with step-mom. He revealed to me that he would like to be fucked in the ass, but that that would never be possible with step-mom. I was horrified! I beg your pardon? That's normal today! I even always have a big dildo in my pocket. Today you can't do without it! I asked him if I should try my part on him? He had his pants off faster than I could see and his age still had a really tight back. Immediately I stuck my tongue deep in his ass! I need this so badly. After licking his ass nice and soft, I push the big mega part into his little asshole until it stops! He screamed as if on a spit but his tail stood like one. Now he couldn't get enough. And then it happens! The moment he cums an unbelievable load of fuck sauce while I fuck his ass, the stepmom is in the doorway