hiding

Hi all, I need help with a scene where there was a girl (i think it was brunette) fucking with his boyfriend in her room (hiding under the bed sheets), but the ****** enters the room and they both have to fuck all over the house hiding from the *** Thank you in advance

I know "handbras" are the most common, but they're usually grinning or are selfies, both things I don't want here. I prefer full nudity (except of course their hands or arms covering key parts), but near it works too. Standing, ***** position, kneeling, crouching, laying down, doesn't matter...