This isn't exactly a BDSM topic, although it can apply.

We are just a regular couple who enjoy slightly rough sex. I'm not talking smack me up rough or anything. I like it when he's just a bit more firm with me, when he uses his own hands to bind me in place as he goes down on me, or when he uses his size and strength to grab and place me exactly where he wants me. I don't always want to be treated as a delicate and breakable piece of China.

Sometimes, I think he forgets he's quite a bit larger and much stronger. I'm quite small so there are times I feel his arms constricting too tightly. I think, this might be a good moment to have a safe word like "yellow" just to let him know that I still like what he's doing but there's a level of pain that is being reached that could cause harm. I don't want to say, you're hurting me and kill the mood. After all, I do like our rough play. He just doesn't realize his strength when we are both caught up in the moment and going strong.

So, does anyone have little safe words in use other than, "ouch...stop...that's too much..." And so forth? I want to keep our sex HOT and not fizzle it by killing his mojo while keeping me from being squashed or possibly hurt in the process.