Us men can be VERY dense. I got invited to a FFFM foursome and didn't figure it out until the next day. I am bi and a woman told me that she wanted to know what anal felt like so I proceeded to explain before she finally told me that what she meant was that she wanted mento fuck her ass. My now wife pinned me against a wall, shoved her hand down my pants and, with my dick in her hand told me, "You can't take a hint. I like you!" (Don't do this. It's literally sexual assault). The list of obliviousness is much longer.

We just don't get subtle.