Is it normal to have this happen thinking about your mom?

For some reason I had gone to bed early and in turn I woke up earlier than usual. I am normally bad at waking up on time so my mother wakes me when she gets up. So I looked at the clock and it was 20 minutes before she would wake up and I was horny. I started thinking about my mom walking in and seeing my hard cock. So, I took off my boxers and jerked my cock.I kept seeing my mom walking in spotting my dick and then she starts to stroke it. This really gets me going, but I stop and look at the clock and in 2 minutes she should be waking so I try to stay hard and plan to flash her. At this point I am rock hard and standing straight up. I hear foot steps and try to fake sleeping. I hear the door open and foot steps stop. She starts to whisper," Time to waa.....Ohh my!" I sit there still hard and faking. In my head I am thinking," Is this really happening? Is she going to walk over here?" I hear foot steps again coming closer. My dick is now beyond hard and is on fire. She stops next to my bed and I can hear her heavy breathing. I feel her hand touch my thigh and she starts lightly rubbing it. My mind is going crazy. Then, she gently gripped my cock. I nearly came just from that light touch. She moved her hand up and down not like a regular girl, but like a mother with loving care. I start to feel something wet and warm on the head of my dick. Her tongue twists around my head licking up the slit. The feelings because to much for me and I start to feel my balls tighten. I groan loud and push my hips up bursting my cum into her mouth as she swallows it all. It was the greatest thing that has ever happened to me. The feeling was like in heaven. I start to open my eyes and all I see is darkness. I look at my dick and cum all over it. I put my head back down. Then, my mom actually comes in. She starts to say,"Honey time to wa...Ohh my! Hey you might want to clean up your sperm is getting on your sheets." She throws me a box of tissues and walks out. Still the best orgasm I have ever had.

Is it normal that this was so amazing? or Am I wrong for ever thinking this about my mom?