If you've been into this for a while I'm sure you have some strong triggers. For me anytime a legitimate MILF says the word "MILF" or talks about having a son is a huge turn on, and this community is the first I've seen of that outside of myself enjoying that kind of thing.

A scenario for me would be accidental or teasing nudity. If your friend or bully would see your mom naked even for a split second it would be a huge trigger, and something sons of MILFs have feared could happen.

Almost all of them.
You should just check all stories and find mom's appearance (usually somewhere in the beginning).

I'm 16 now, had it when when i was 14. Was watching those YT videos where an bot voice reads certain comments of specific topics on Reddit, one of them was an question if anyone has ever slept with their Friends Mom/Dad. I just searched something between the lines of "Friend and Mom fuck" or "bully fuck mom" and here i am. Also seen lotsa MomNTR too, i'm mostly switch looking for other switchsons around my age, i don't mind being the bully/friend or the cuckson.

Updated post with new chapter; there will most likely be one more that may be a little longer in length.

There is definitely a combination of things related to my mom that led me to have this fantasy. First of all, my mom had me at a young age, she got pregnant at 17 and had me when she was 18. She is beautiful, and has a hot Brazilian body. She is also a very “friendly” towards men, even though she is not flirty or slutty. She has a refined look, which made her attract a lot of older guys. In her mid 30s she had already married 4 times (or 5, I’m not even sure), and had a lot of boyfriends. Her relationships always follow a pattern, in which becomes very toxic towards the end, as she is overly jealous and possessive. But even though she makes the guy’s life a living hell, it is always her that breaks up, and they do what they can to win her back. When I was young, I couldn’t understand why was that, but now I can clearly understand that probably it has to do with how much of a good fuck she is.

She is also jealous and possessive with me, specially when she single and needy. I’ve also come to realize how she could never be fully satisfied with me, and always seemed frustrated somehow. The fact is, and this is true for all mothers, she needs to be sexually pleased, and I bet that it takes a lot to do that with my mom, and of course I can’t do nothing about that, so what is left to me is to sit back, and helplessly be her cuck, while other guys try to satisfy her. It's not money that will keep relationship going, it's not looks, it is not being nice and respectful, it is satisfying her hungry cunt, and I bet that is why she is always changing partners. The tragedy is that I'm sure that I could be the one to give her the best fuck she has ever had, and I would please her way more than any other guy she has been with.

I barely know my father, as he is just one of the guys that got to fuck my mom when she was younger, and she was done with shortly after. It even feels inappropriate and humiliating to refer to this random guy as my father. Even though I’ve been spoiled and could’ve done a lot worse in my life, my mom fucked up any chance of me having a normal relationship that isn’t affected by those things. I’m way more attracted to mothers than girls my age, and I also wish to make the fantasy come true of a young guy like me, banging my mom, even though this would also be humiliating for me.

Fortunately, one thing that I’m grateful for her sluttiness, is that at least, that guy that she had me with, was probably well hung and attractive, I say that because I inherited those traits as well. And probably because of that, it made me very successful at seducing and fucking hot moms. The ease that I had at doing that makes me realize that I don’t have a particular slutty mom that is negligent and careless of how their sexuality affect her son, that’s just how a lot of moms, maybe most are. I've been rejected plenty of times by girls around my age. But maybe once or twice I've been rejected by a mom, even married ones. Most of the times when I come on to them, they do all the work for me. And even when I act more pervy towards them, some still like it despite of that, but most love it more because of it. The kinkiness of some of these moms even pushed to be even more of a pervert. Yet their sons, are completely clueless of the whore that are raising them.