That, despite what movies/TV/literature hammer into your brains, fathers can be emotionally available, engaged, great parents.
 
I'm the sole parent of a son and two daughters and I've had to listen to "what does mom think of her getting this haircut?", and "tell mom to schedule an appointment" for years.
 
Mom's in a halfway house you f%*kwit, and I'm plenty capable of making decisions for my own children.

That many men only have meaningful physical contact with their SO.
 
Single men often exist in touch isolation. For a variety of reasons and social pressures, many men experience a lack of physical contact.
 
Most men I know won't even feel comfortable hugging their best friend. For a long time, the only physical contact I had with other people was either sexual or a part of a competitive sport. Getting closer to middle age I've learned to hug my friends and have platonic physical contact.
 
It really helped my mental health. I used to feel alone all the time even when I was with friends. Hug your male friends and help them normalize platonic physical affection.

I do not pick up on "signals." Please ask us out or tell me, to my face, like a 5 year old, what you want or are thinking. I am kind of dumb.

When I'm asked what I'm thinking about and I say nothing, it's because I'm usually thinking of something dumb like who would win a fight. Godzilla or Megatron?

That I really want to dress up in full plate armor and own a warhorse.

When you ask me how my day was or what I did today, nothing in my day usually stands out as special, so I just dont remember. I usually dont remember what I do, I just live.

When I tell you I don’t need anything for Christmas it really means you should get me the 7541 piece Lego Millennium Falcon set.

That I feel like a creep just by simply existing. I'm always so worried I'm making someone uncomfortable just because I'm a sorta tall, kinda big guy just quietly existing.

I know it's because I've heard from so many people that "guys are such creeps" during middle/high school with no further explanation.

I can’t tell if you’re flirting with me or not.

That the more guys you have hanging out together, the dumber s!#t they get into increases exponentially.
 
You get two guys, and they might throw a water balloon against a glass window, breaking it over the others face. Get four together, and they fire an airsoft gun into an empty room and break the lightbulb.
 
God help you if you get more than that... And yes, those do seem to be very specific examples.

That they need to stop being so f%@king mean to themselves.

That dudes can have a 2 hour conversation with each other (phone, down at the pub, playing online games) and not talk about any personal things.

My SO finds it super bizarre that I can talk to my brother for an hour and not know how his family is going, how his work is, what holiday plans are. Sometimes some bros just want to talk about movies or make fart jokes.

That when you can’t decide between two outfits and you ask us we literally would be ok with you wearing a garbage bag if it means the process could be sped up and we don’t leave the house by midnight.

I still love you even though I can’t give you 100 reasons why I love you.

I genuinely don't care where we go for dinner.

Lack of emotion doesn’t always mean lack of caring.

My missus met my oldest friend at a wedding early last year. Haven't seen him since, or for about ten years before, despite living about three miles away from each other.

Just before the wedding, she asked me how come we never met up, I said "he's alive, isn't he?". Couple of days later at the actual wedding, she asked him the same things, and he also said "he's alive, isn't he?".

She never understood that. Never managed to explain that to her.

Why we can't coo qt babies like they do. I love babies they're the best. But if I do that in public people would give me weird looks.

Idk if most difficult but it sure did took a while to explain to my ex that we don’t look at each other’s d!$ks at the urinals.

How two or more men can bond just by standing in a room in silence.