haha, that all sounds so familiar. None of my guys do that, at least not that often, but I've had many a scare because a door has creaked open when I least expected it.
The other day, I was getting ready for work, getting dressed in the bathroom. I believe I had my arm stuck in the sleeve, kind of all tangled up and unable to get in or out of the shirt, when the door just blasted open. OMG, someone's gunna see me nude, and stuck with my elbows in the air!! Augh! But all it was was my dog, Jake, blasting the door open with his head (apparantly I didn't shut the door all the way, lol) and giving me a grin when he verified that I was, indeed, in the bathroom. So I closed the door again, turned around, resumed getting the shirt on, when the door blasted open again! "Hah! Hi mama!" Good thing he gives such a goofy grin when he opens the door, 'cause all I can do is laugh. And heck, it's better than it used to be, where he was terrified of the bathroom and would snarl if you so much as touched him while he passed the open doorway.
I know it's the kitties on the other side of the opening door when the door is creeeeeeping open, sometimes only opening narrowly (just enough for a kitty to fit through). I know it's my dog when the door blasts open like there's no tomorrow, lol