"Without explicit permission"...

As in:

"Hey, how about those Houston Astros! So ya, anyways... I was kinda... you know... wondering... if it might be ok if I had hot passionate sex on your bed?"

"You... you mean my waterbed?"

"Ya, that one."

"Well... ok... I suppose... Now?"

"No later tonight."

"Ok, ya. But I mean, shouldn't we like... first go to dinner or something like that, and just kinda ease into it?"

"What?!"

"What?"

"What do you mean... Ease into it? Oh... oh... wait a minute. Sorry my bad. No, I ah... didn't mean with you, but rather my partner."

"Ah... Ok... Ya, of course you meant that. I was... I was only joking there!"

"Ha ha! Ya!"

"Ha ha. So I mean sure... I guess... I guess it's ok--just don't bust it or anything like that."

"No, no I won't. Nothing intense like that."

"Right... so you mean vanilla sex right Nothing too crazy, acrobatic, or jumpy in nature?"

"Exactly. Nothing like that."

"Ok. Only reason I asks is because waterbeds are kinda expensive and all. It's not that I don't want you to have vigorous enjoyable sex with someone else in my bed. I mean of course I do. But rather it's just you know. It's expensive is all."

"Of course. I'll take good care of it."