I was talking to a friend whom recently learned about my social proclivities and was understandably curious. One night after we'd shared a few beers he told me he couldn't see me as a Dom. I smile too much, it makes my face seem kind he insisted. This of course made me laugh and confused him, so I explained.
Imagine, I told him, being pinned against the wall. An arm as unmovable as the cold wall behind you holding you as calloused fingers slowly tighten around your throat. Your racing pulse pushing feebly back against an enclosing vise as you gasp for ever more precious air. Then looking down along that arm to find my smiling and unperturbed face. A face uncaring for your gasps, merely wearing the placid expression of one mildly enjoying some half-clever joke. Smiling in a manner to suggest that completing my squeeze and crushing your windpipe will put no more damper on my day than a passing rain shower.
That I hypothesized to him is more terrifying than any grim face. Judging by how he's stopped asking me questions he agrees. Perhaps I shouldn't have been grinning at him while explaining...